The Big Fat Homunculus Bible

This guide is written under the assumption that you already have an alchemist. I warn you now, this guide is quite long.

Table of Contents:

  1. What is a homunculus/type of homunculus
  2. How to create/get a homunculus
  3. Leveling mechanics
  4. Hunger and Intimacy
  5. How to control them
  6. AI
  7. Management, life and death of a homunculus.
  8. Notes on homunculus
  9. Frequently asked questions

1. What is a homunculus/type of homunculus.

A homunculus is a monster under the control of an alchemist. The skill to create them is a rather long and involved quest (see section 2).

Now here’s the catch. While the homunculus looks and often acts just like a pet, it is not a pet. It will (depending on the AI script, see the AI section) be able to attack, use it’s own tree of skills on the player or on target monsters and often act on it’s own. A homunculus has it’s own set of stats, hp, sp, etc. and can (yes CAN, see section 6) die.

There are 4 types of homunculus and each one has two different sprites.

Version 1: .gif
Evolved: ng

Version 2: .gif
Evolved: 2.png

Version 1: 1.gif
Evolved: r.png

Version 2: 2.gif
Evolved: r_alt.png

Version 1: th_v1.gif
Evolved: .png

Version 2:
Evolved: alt.png

Version 1:

Version 2:
Evolved: lt.png

Filr/Filir is best explained as an agi killer. It’s high points are flee boosting skills and high attack speed. It’s damage output is considerable, especially after it evolves. It closest resembles an aspd sinx.

Amistr is, in general,a vit tanker. It has high hp, a lot of defense boosting skills and tends to live longest out of all the homunculus. It closest resembles a shield paladin.

Vanilbirth/Vanilmorph is, in general, the magic caster. It has high sp and high magic attack and a skill that casts random elemental bolt spells making it capable of the highest damage output of the 4 homunculus types. The downside is that it is also the largest of the homunculus types and the softest. It will die the fastest but go out in a blaze of glory. It closest resembles a Bolt Professor.

Lif/Liif is a little strange. Physically speaking it is the weakest of the 4, but it has some of the most useful abilities out of all of them. It can heal the alchemist, increase the movement speed of the alchemist and the movement speed and flee (very small boost of flee) of the homunculus simultaniously and once evolved has the capability of stacking it’s considerable magic attack onto it’s atk. It’s basically like a battle priest. Strong, hard to kill and has a tendancy to hit like the kick of a mule when it wants to.

For the skills, please explore them on your own. For a homunculus’ evolved skills, please view section 8 before doing so.

2. How to create/get a homunculus

First, you must be an alchemist or a biochemist/creator. No other class has access to a homunculus. Then you must do the quest for the skill (it is the alchemist’s second quest skill and is shown here, scroll down, it’s called Bioethics). This passive skill will allow you to unlocks the homunculus skills (Call Homunculus, Rest/Dissolve Homunculus, Ressurect Homunculus).

In order to create a homunculus you must purchase one of each of the items sold by the npc in the alchemist guild in Aldebaron. You must have a potion creation guide and you must have learned pharmacy. Yes you must brew your homunculus.

The result is an item called an embryo. Ordinarily this item will do nothing, but when an alchemist who has no homunculus uses the skill “call homunculus” with one in their inventory, it is consumed and a new homunculus is created at lvl 1. The type of homunculus (outlined above) is totally random, as well as type. If you do not get the homunculus you want, you can delete your current homunculus (cruel), and try again.

When creating a homunculus, your stats effect your chances of getting a particular homunculus as follows:

if your STR is 99:

Success Rate: 47.9%
Chance to get Amistr: 36.3%
Chance to get Filir: 38.8%
Chance to get Vanilmirth: 13.6%
Chance to get Lif: 11.1%

if your INT is 99:

Success Rate: 52.8%
Chance to get Amistr: 5%
Chance to get Filir: 7.6%
Chance to get Vanilmirth: 44.9%
Chance to get Lif: 42.3%

if your AGI is 99:

Success Rate: 47.9%
Chance to get Amistr: 36.3%
Chance to get Filir: 38.8%
Chance to get Vanilmirth: 13.6%
Chance to get Lif: 11.1%

if your DEX is 99:

Success Rate: 57.7%
Chance to get Amistr: 5%
Chance to get Filir: 7.6%
Chance to get Vanilmirth: 44.9%
Chance to get Lif: 42.3%

Vit is 99:

Success Rate: 47.9%
Chance to get Amistr: 36.3%
Chance to get Filir: 7.6%
Chance to get Vanilmirth: 13.6%
Chance to get Lif: 42.3%

Luck is 99:

Success Rate: 57.7%
Chance to get Amistr: 5%
Chance to get Filir: 38.8%
Chance to get Vanilmirth: 44.9%
Chance to get Lif: 11.1%

INT and DEX 99:

Success Rate: 62.59%
Chance to get Amistr: 3.1%
Chance to get Filir: 4.7%
Chance to get Vanilmirth: 46.8%
Chance to get Lif: 45.2%

STR and AGI 99:

Success Rate: 47.9%
Chance to get Amistr: 41.5%
Chance to get Filir: 43.1%
Chance to get Vanilmirth: 8.4%
Chance to get Lif: 6.8%

Therefore, if I wanted a lif, for example, I would get my vit and dex to 99 each as that would create an approximatley 80% chance of a lif. This chart is useful as it can save you the effort of many re-creations.

Keep in mind that the chances of getting any particular homunculus are STILL random.  There is a significant possibility that you will STILL even with PERFECT stats, NOT get the homunculus you wish to raise.

3. Leveling Mechanics

Ok this may sound a little strange at first but here’s how it works. A homunculus gains exp and levels just like player characters do. The only exception is that they only use jexp. They cannot be included in parties or shared exp and can only gain exp if they actually strike the target monster.

Here’s the catch. The percent of the monster’s hp that they do in damage translates directly into the quantity of the monster’s jexp they steal from you. That’s right, they STEAL your jexp. They give you all the exp but if a homunculus does 100% of the damage to a monster, it will give you exactly 0 jexp as a reward. This is not a bug, this is how they were programmed. I have recently discovered that a homunculus actually gains exp based on the monster’s bexp ONLY. It takes a percentage of the jexp away from you as described above, HOWEVER, gains exp as if it had just gained it’s base exp. This is more obvious when fighting monsters with high bexp but low jexp (like monster in odin’s temple)

After reaching a certain amount of exp, just like you, it will level up, made obvious by the fanfare and it’s own level up angel. It’s stats are increased AUTOMATICALLY. You have absolutely no control over it. If your homunculus develops badly, it’s just bad luck, no more then that.

After each 3 levels your homunculus gains a skill point, which can be used to learn one of it’s skills. There is no way to reset your homunculus stats or it’s skills but don’t worry, the worst they get is good.

Also note that a homunculus will still get more skill points then it has skills to learn, so you will NEVER have to skip or ignore skills.

4. Hunger and Intimacy

Ok, so you’ve all had a pet or known someone who has one right? These work almost the same way with a few tiny little differences.

Just like with pets you can view your pet statistics by opening up the pet window (alt-r) or additionally, by typing @hominfo, which is more detailed if the command is activated on the server you are currently playing on.

Unlike pets, a homunculus has a “hunger” bar, which will indicate how hungry your homunculus is at any given time in a percent based fashion. Each time you feed your pet it’s food, the hunger bar will go up by 10 points (percent), to a maximum of 100. Each minute that passes by while your homunculus is out (not dissolved/rested) it loses 1 hunger. It’s fairly easy to understand. Keep it’s hunger out of the red and it won’t lose intimacy.

Intimacy is also similar to a pet intimacy, but on a slightly larger scale. For a homunculus, intimacy ranges from 0 to 1000. If a homunculus is left at 0 intimacy for too long it will run away. To increase intimacy it is just like with a pet. Feed it when it’s hungry. Oh, and for the record, intimacy follows this scale:

0-3 = Hate with a passion
4-10 = Hate
11 – 100 = Awkward
101-250 = Shy
251-750 = Neutral
751-910 = Cordial
911-1000 = Loyal

You can also view your current intimacy rating by typing @hominfo (again, only if that command is available to you).

You are more likely to gain intimacy if you feed your homunculus when it is at the correct hunger. Feeding it at the wrong time involves a lower chance of increasing intimacy by 1 point. Yes 1 point per feeding max. As such:

1-10 50%
11-25 100%
26-75 75%
76-90 -5%
91-100 -50%

Yes, that’s right, if you feed it past 75 you have a chance of losing intimacy with each feeding. This is not a mistake. Your homunculus will also lose 1 intimacy when it reaches 10 hunger (and the game will start shouting at you to feed it) and then will lose 1 every 3 minutes afterwards. This means, don’t let it’s hunger get below 10.

Once a homunculus gets intimacy of 911 or higher (yes, loyal) you can use an item called a stone of sage/philosopher’s stone/stone of intelligence to evolve it into it’s higher form. Doing this boosts it’s hp/sp and it’s stats slightly, and unlocks the final evolved skill.

Stone of Sage can be acquired from Gemini S58 (in Biolabs dungeon) and various Thanatos Tower monsters.  In previous SVNs it was purchasable through an npc in the alchemist guild.  This is no longer the case.

5. How to control them

Controls for a homunculus are relatively simple. Most of the time, the AI (see section 6) will control the homunculus for you. However, if you wish to use more specific commands or specify which target it will attack the commands are as follows.

Alt-right click – move there
Alt-double-right click – move there and stay there
Alt-right click monster – that’s the target
Alt-double-right click monster – attack that target

Please note that these commands are not 100%! Gravity got lazy and about half the time, the commands DO NOT WORK PROPERLY. It has nothing to do with the server administrators or the lag, or the way the homunculus AI is running, they just do not work that well.

Alternatively, if you do not want your homunculus to attack anything, right click it and put it into passive mode. In that mode it will only attack monsters that attack you or it.

6. AI

this is perhaps the most difficult part to explain. Do not be afraid of homunculus AI. It is legal under most RO servers. Homunculus AI utilizes bot programming to control the homunculus internally. Leaving you free to control everything else for your character.

The original Default AI is (to put it blundly) a piece of utter dog doodoo. Do not use it. It will kill steal, it will run after the wrong targets and using it, lif and Vanilmirph will never actively seek out targets.

It is highly reccomended that you use customized AI at all times. For those who aren’t coding gurus, you can download premade custom AI programs so you don’t have to worry about that. I would reccomend that you use MirAI as it is fairly complete, doesn’t KS, and has a handy dandy little control panel thing to change the settings without having to dig into the code.

While I say that MirAI is quite a good custom AI, it is by far not the only one. If you are unsatisfied with it, do not complain to me, go find another one. (I’m using one I made myself)

Please keep up to date on all homunculus and various AI related rules on your server. I am NOT, repeat, NOT responsible for any discipline gained by this lack of research.

7. Management, life and death of a homunculus.

since homunculus are external characters that have their own hp and sp, they, too can die. Instead of leaving the body behind, a homunculus will just vanish on the spot, but no worry! They can be returned to life by the use of the skill ressurect homunculus.

Homunculus in the way? Want to autotrade all night? use Rest/Dissolve on them and they will be handily put away into a pocket dimension while you go afk.

Need it back? Bad? Call it and it will come!

oh and just so you know, homunculus cannot lose intimacy or exp by repeatedly dying or being rested and re-called many times in succession.

8. Notes on Homunculus

  • Rest/Dissolve cannot be used when the homunculus has less then 85% of it’s hp.
  • Homunculus AI fails and stops working once the homunculus is out of the alchemist’s sight range. You have to go retrieve it.
  • Teleporting/using fly wings/using butterfly wings/walking through a portal will usually make the homunculus appear on the same cell as you are on. If it does not, see section 9.
  • Ressurect homunculus will not state this, but ressurect homunculus will ressurect the homunculus at (skilllvl*20)% hp. At lvl 5 it will restore to 99% hp.
  • it is very difficult to force homunculus to attack a specific player that isn’t closest to you as the alt-right click still brings up the trade/etc menu.
  • you can not hit a homunculus with an AoE of any type. Sorry, but wizards can’t really hurt homunculus unless they focus fire on one. They’re immune to traps too. They still count as standing on the cell when placing traps though.
  • you can still cause status ailments to homunculus! They can still be frozen, poisoned, bleeded, etc. It’s just very difficult when it’s high level.
  • you can not cast any single target priest spells on a homunculus! You cannot use HEAL on them. you CAN however heal a homunculus using potion pitcher, slim potion pitcher, gospel, bard/dancer skills or sanctuary.
  • when you evolve your homunculus your intimacy is wasted. Yes, you heard me, wasted. it’s gone, you gotta get it all back again.
  • you don’t need to be loyal to make it use evolved skills. Lif and Amistr can use theirs once they hit awkward (50 intimacy), vanilmirth can use theirs once they reach 450 intimacy (half) and filr can use theirs with only 2 intimacy (but it does crap damage)
  • the lif and the amistr do not use intimacy to activate. In this case they just have very long cooldowns, 15 minutes for lif and 10 minutes for amistr
  • vanilmirth and filr’s evolved skills will return intimacy to 1.
  • filr’s evolved skill damage is based on intimacy level, and can deal a higher damage then asura
  • vanilmirth evolved skill will deal 5×5 aoe damage based on it’s hp

9. Frequently asked questions

a. My homunculus is gone!

it happens from time to time. If you haven’t left it out long enough for it to run away (intimacy drops to 0), Follow the list of instructions below:

1. Rest/Call your homunculus
2. Ressurect your homunculus
3. Re-log
4. Re-start RO
5. Re-start computer
6. Contact a GM

if you reach step 6, it is likely that your homunculus has been destroyed through a glitch in the game. Sorry, I can’t help you there.

b. what happens when I trancend?

the homunculus goes back into it’s pocket dimension and waits for you to hit biochemist/creator. When you do you can call it again once you get the homunculus skills back. don’t worry, it’ll be at exactly the same intimacy/hunger/exp/level as from before you trancend.

c. how does leveling up work? I can’t set my homun’s stats!

you don’t. The homunculus automatically gains a point in each stat based on a percentage. Each one is different and has a different chance of gaining a point in any given stat on each level up. If you are personally very unlucky you might end up with a very weak homunculus, but the way the stats are scaled, you are increasingly likely to hit middle of the road to over powered.

d. is my homunculus weak? over powered? middle of the road?

use the command @homstats (if available). it should display your stats and the range of each stat as it could possibly have gained as it lvls up. I.E. if I use @homstats with my lif and it says 109 (35 ~ 209) it means my homunculus has 109 of that stat and it’s minimum possible was 35 while the maximum possible was 209.  My homunculus is middle of the road in that stat (by my judgement).

There are also several homunculus calculators on the internet, though some of them do not work all too well.

A great majority of this guide came from many different RO information sites including but not limited to iRO Wiki (, Rate my server ( and the RO Empire forums (link forgotton). Any similarity between this guide and guides found on those sites are purely coincidental and unintentional.

61 Responses to “The Big Fat Homunculus Bible”

  1. Thanks.

  2. Excuse me, I translated (or tried to translate) your guide to Spanish because I really liked it, I found it very useful and also cleared up some doubts I had about the AI.

    I hope you don’t mind me translating your guide, I made it clear that I didn’t write it and put a direct link to this page, too. It’s posted here –>

    If you disagree about your guide being translated/posted in forums and all, please say it and I will delete the topic on the spot.

    Thanks. :)

  3. can you buy the sage stone? and where?

  4. can homunculus like my valnimirth auto cast caprice?

  5. @blue, yes your homun can, after u download the MirAI into your USER AI folder <– this is the website for downloading MirAI

  6. people whats your hom stats?

  7. Please put some decent info on this guide , it doesn’t tell much about the homun’s themselves.

  8. can you buy stone of sage?

  9. no.

  10. (double post sorry) U have to get it from the Gemini S58 mob(In biolabs) or any number of mobs in thantos tower I believe. The Gemini S58 mob is your best bet since he/she/it is pretty easy.

  11. (wow third comment) Few of your errors, please edit your guide:

    1: Lif’s Emergency escape skill does NOT affect the alchemists Flee. Just movement speed.
    2: Alchemist stats have NO EFFECT on the possible homun u can hatch. None. Tested myself on 2 separate servers, has no effect.
    3: Homun do NOT use jb xp to level. They level off base xp just as you do. The difference is, the % of damage the homun did to the target is the % of the job xp that simply ‘disappears’(A penalty for allowing the homun to do your work for you)
    4: Your hunter/intimacy chart is slightly off. Its 24 that the hunger bar turns red, not 25. Feeding at 25 gives 75% chance to gain 1 point of intimacy, feeding at 11-24 is 100% chance.(or on some servers its 1 point, 3/4 a point from 26-, etc instead of % chance for 1)
    5: Filr’s Evolved skill costs a ‘random amount’ of intimacy. It does not preset it to 0. And it always does the same nasty damage. Problem with this is its possible to lose enough intimacy to go beyond 0(hate) and likely to lose the homun.
    6: Play an alchemist with a homun before u write a guide about them next time :D

  12. … really bad guide…
    like AtmaDarkwolf already said:
    play an alchemist with a homunculus before you write a guide about it /hmm

  13. Alright, so I was just wondering…where did you learn how to script your own AI? I was thinking of making one myself, but I haven’t the slightest clue what to do. D:

  14. Where do u get potion creation guide books?

  15. @Monty: In the alchemist guild, if your server doesn’t have a custom shop selling them at another place for rapid access (you can ALWAYS buy them at the guild, however)
    here is the map name (for @warp, @rura, etc.): @warp alde_alche
    (aldebaran alchemist Guild)

  16. hi Rhino_Man
    can you please tell me where to download MirAI for my homunculus becoz my filir can use all other skills except moonlight so can you please tell me the link to download homunculus ai .and by the way im using the new sakray so i think the old ai does not work anymore

  17. For the Amistr and Lif evolved skill, can you cancel the after cast delay by disconnecting and then connect again?

  18. this guide is useful, thanks..
    is it any faster way to increase the intimacy??

  19. Actually, both the Rhino_Man and the above poster are wrong for the exp calculation. It goes like this:

    1. First, exp calculation goes normally as if the alchie and homunc were separate players. Each one gets base and job exp based proportional to their damage done. Job exp for homunc vanishes for obvious reasons. KS bonus applies for both.
    2. The alchie also gets additional exp equal to exactly what the homunculus received. This is purely base exp, since the homunc didn’t get any job exp.

    Example, take a generic 1000 exp/1000 jexp monster, and the alchie and homunc damages it equally.
    1. Alchie receives 500*1.25(KS bonus) base exp and 500*1.25 job exp
    2. Homunc receives 500*1.25 base exp. Job exp disappears.
    3. Alchie gets additional 500*1.25 base exp (same as what the homunc got)
    Total: Alchie: 1250 bexp, 625 jexp. Homunc: 625 bexp

    To simplify:
    - Alchie kills monster alone: Alchie gets 100% of the base and job exp, same as if homunc didn’t exist.
    - Homunc kills monster alone: Homunc gets 100% of the base exp. Since alchie gets a duplicate of the homunc exp, alchie gets 100% of the base exp as well. (and 0 job exp)
    - Both alchie and homunc kill monster: Alchie always gets 125% of the normal base exp, thanks to KS bonus, and job exp proportional to the damage done (out of a maximum of 125%). Homunculus gets base exp proportional to damage done.

  20. That’s correct, althought the exact name of your KS bonus is a “exp tap”.
    The exp tap is rewarded for anyone doing any action with the monster, and is permanent.

    Getting hit, lex aeterna, etc.

  21. Which factors affect Homnunculus stat growth?

  22. None. If your is bad, try again :(
    It’s completly luck based.

  23. Will my homunculus be weaker if I evolve it while it isn\’t loyal?

  24. You simply can’t evolve it if it’s not loyal.

  25. Where can i buy a stone of sage? I heard that it can be buy in a hidden NPC? Correct me if im wrong. Pls..

  26. @abbey26: u cant buy a stone of sage, just hunt a Gemini S58, or monster in thanatos tower, Gemini S58 is MUCH easier tho :D

  27. N there is no hidden npc that sells stone of sage.

  28. I Already got the evolved form of filir on my first embryo,Will it have the new skill when it becomes loyal?Because I obviously didn`t use stone of stage.
    Because it was already evovlved in the 1st place.Having doubts, someone please answer

  29. it’ll not be a evolved form. filir evolved form and basic form looks alike.. so i think u got it wrong..

  30. Hello.
    Does It’s important to xp my homon after I evolved it.Or I can xp him then after evolved it?

  31. no command…

  32. Btw it only do the recharge and patrol amfness

  33. @ homo

    It doesnt matter weather you evolve it at level one or not. I evolved mine at 30 and it gets the same amount of random stat boost.

  34. Wrong !!

    stat doesn’t affect wich Homonculus you get, look at the source code before giving some magical numbers…

  35. i agree with youplaboum, i have a 99int biochem and i seldom get the vanilmirts…BTW nc guide /no1

  36. hey umm how do u delete ur pet and get another one

  37. To delete a pet you need to open your pet status window and click the del (delete) which is to the left of the skill button. Both buttons can be found in the upper right hand corner of your pet’s status window.

  38. Is this homun okay?

    Homun type: Vanilmirth
    Level: 29

    Please reply ASAP. Thanks

  39. Is it possible to keep two homunculus?

  40. @Caramelchocs: No. But you could delete you past one and make another one, but it will be a problem. Everything will be reset.

  41. who knows how can a novice or a high novice to get a homunculus please teach me please….

  42. Novice, High Novice? No it can’t get a homonculus but if you are an alchemist and had a homon. It’ll be in its Pocket Dimension(like Rhino_Man said). So when you become a biochemist and get the skill for calling your homon. You can use it to get your homon back again. (:

  43. You say at the start the guide is lonmg i think the guide is really nice thats all i have looked for you have get all info is this with no sences they are not for use its to say
    Nice Work Man XD

  44. … wow it took me 50k approx. to make 1 embryo!!!!
    is there a cheeper way??????’
    im low onzeny…. =____________=

  45. but when my filir die, and i resurect it again, it lost his skill for moonlight except over speed? can u tell me why?

  46. @ Solar Nights you’re lucky, it takes me 240k to make a single Embryo (my potion skills are low) and no there is no cheaper way, just get more dex, luk, and lvl up your 2 potion skills.

    My question is: are there any recommendations for leveling Homuns at a low lvl? mines about lvl 7 or so and i’m just curious if i have to do it the pain in the butt way, or if there is some magical easy way to do it.

  47. (sorry for double post) just making a correction on my earlier statement, i ment Dex and Int, not Luk. (again sorry for double post)

  48. @Sad_Panda

    No you was right the first time, Int only has half the effect of Dex or Luk in brewing.

    For better brewing you want to pump Dex and Luk. Only have around half as much Int as you do the other two.

  49. ^right DEX & LUK are for the pure brewers (which is a pain to level especially if solo mode)…I’m 75 and my homun is 95 I evolved it but no new skills appeared and the stats bonus are pathetic T_T wonder why the new skill didn`t appear…….

  50. stone of sage (*this from item info rms)
    Note : This item is, apparently, not used anymore in official servers. It has been replaced with an usable version capable of evolving Homunculus.

    since its has been replaced..what they replace with??

  51. Nice guide, I hadn’t seen much about the game before but now I want to go and play it

  52. hi, nice info, i need a stats table for Homun with lvl max 200 can u help me??

  53. how to increase my amistr attack damage? i will level it to increase the damage or its something to do of the stat of my character? plzz reply A.S.A.P

  54. How can i remove the fire icon in my homunculus head? help pls

  55. Mighty useful. Make no mistake, I apietcpare it.

  56. i nid help, my homunculus was run away because i dint feed it, what will i do? i have an embryo and when i use call homunculus it says skill fail, i cant create a new homunculus? pls help me

  57. Howdy I have the stone to evolve but don’t know how to do it. Any help wold be great.

  58. my val level 83
    hp 15564
    sp 304
    atk 35
    matk 550
    hit 184
    crit 36
    def 123
    mdef 28
    flee 192
    aspd 167
    izzit lower stat ?

  59. sorry atk 352*

  60. My Vanilmirth Lv99(not involve) is this stat ok or its can be more hire?

    HP 7921
    SP 378
    Atk 491
    Matk 807
    Hit 213
    Crit 42
    Def 179
    Mdef 34
    Flee 205
    Aspd 167

    And what normally max stat for uninvolve Vanilmirth?

  61. will evolution of homun at level 1 affect the stat growth of the homun when leveling?

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