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Homunculus

How an Alchemist, Genetic or Biolo gets a homunculus: Bioethics, the Embryo, the four types, food and intimacy, evolution, the Homunculus S and what each skill does.

Updated 7 October 2026homunculusalchemistgeneticbioloembryointimacyevolution
Homunculus
A companion of your own making.
A homunculus is an artificial creature that fights beside you. You make one with the Alchemist skills, feed it so it likes you, and it can evolve. A Genetic or Biolo can later mutate an evolved one into a Homunculus S. It is not the same as a mercenary: a mercenary is hired for 30 minutes, a homunculus stays with you and grows.

Get one

  1. Learn Bioethics. The skill is a quest skill: an Alchemist finds Kellasus in Lighthalzen and starts the Bioethics quest, a chain of 13 steps through Lighthalzen. Kellasus teaches the skill at the end.
  2. Learn the skills in order. Bioethics opens Vaporize, Vaporize opens Call Homunculus, and Call Homunculus opens Homunculus Resurrection (5 levels).
  3. Make an Embryo. Your homunculus comes from an Embryo. You make it with the Alchemist's Prepare Potion skill, using the recipe from the Potion Creation Guide. The Guide costs 100,000 zeny from the Guild Dealer in the Alchemist Guild (choose "Purchase a production manual").
  4. Buy the materials from the Material Seller : one Seed of Life, one Morning Dew of Yggdrasil and one Glass Tube for each Embryo (prices below).
  5. Call it. Cast Call Homunculus (10 SP). The Embryo is used up and one of the four types appears, picked at random with the same chance each. You cannot choose.
Material for one EmbryoPrice
Seed of Life60,000 zeny
Morning Dew of Yggdrasil20,000 zeny
Glass Tube5,000 zeny
Together 85,000 zeny for each Embryo, plus the Guide once.
Vaporize puts the homunculus away: it needs 50 SP and has a 20-second cooldown, and the homunculus must have at least 80% of its HP. Calling it back after a Vaporize costs 1 Seed of Life instead of an Embryo. If it dies, Homunculus Resurrection brings it back.

The four types

Every type has four skills, the last one only after it has evolved. Levels cap at 99.
TypeRaceElementSizeFood
LifDemihumanNeutralSmall, Medium after evolvingPet Food
AmistrBruteNeutralSmall, Medium after evolvingZargon
FilirBruteNeutralSmall, Medium after evolvingGarlet
VanilmirthFormlessNeutralSmall, Medium after evolvingScell
Race, element and size are the server data. Where a value is not written there, the server's default is used.

Food and intimacy

A new homunculus starts 32% full with an intimacy of 21 out of 1000. Its fullness drops by 1 every minute, and every 20 seconds once it is down to 10% or less. At 0%, its intimacy falls by 1 at every step, and a homunculus with almost no intimacy is lost.
Feeding uses one food item and adds 10% fullness. What it does to intimacy depends on how full the homunculus was:
Fullness when you feed itIntimacy
91% or more-0.5
76 to 90%-0.05
26 to 75%+0.75
11 to 25%+1
10% or less+0.5
So feed it when it is hungry, best at 11 to 25%, and never when it is nearly full. Intimacy tops out at 1000 and gives these moods:
IntimacyMood
911 or moreLoyal
751 to 910Cordial
251 to 750Neutral
101 to 250Shy
11 to 100Awkward
4 to 10Hate
below 4Hate with passion
The four foods are cheap: Garlet costs 30 zeny in the shops that sell it, Scell 120 and Zargon 360. Pet Food and the food of the Homunculus S types are sold by the Pet Groomer in the main towns (1,000 zeny each, for example in Prontera ).

Evolve it

Use a Stone of Sage while the homunculus is out and Loyal (intimacy 911 or more). It evolves into its stronger form with more HP, SP and stats, becomes Medium, and its intimacy resets to 10. The last skill of its tree now opens (it also needs intimacy 910). The Stone of Sage is not sold in a shop: it drops from
Gemini-S58
,
Dame of Sentinel
,
Mistress of Shelter
,
Baroness of Retribution
,
Lady Solace
and some stronger versions of them.
The Homunculus S types do not evolve.

Skills of the four types

What each skill does is from the in-game skill text. The last column is what casting it in game showed; it is empty where the skill could not be measured.

Lif

SkillMax levelWhat it doesNeedsWhat the test showed
Healing Hands5Heals you. The amount grows with the skill level, its base level and INT. Each cast uses up 1 Red Slim Potion.Your HP rose with a potion in the bag.
Urgent Escape5You and the homunculus move 10% faster at level 1, up to 50% at level 5, for 40 down to 20 seconds.Healing Hands 3
Brain Surgery5Passive: more Max SP, faster SP recovery and stronger Healing Hands (level 5: +5%, +15%, +10%).Healing Hands 5
Mental Charge3Swaps its Max SP into Max HP for 1 to 5 minutes, fully heals it, and its attacks hit as hard as its magic attack. When it ends, its HP and SP fall to 10.Evolved, intimacy 910DEF and MDEF went up.

Amistr

SkillMax levelWhat it doesNeedsWhat the test showed
Castling5You and the homunculus swap places, so monsters that were hitting you hit it. The chance is 20% per level (100% at level 5).The two swapped cells.
Amistr Bulwark5Raises its DEF and yours for 20 to 40 seconds. Level 1: yours +5, its +10. Level 5: yours +15, its +30.Castling 5Your Max HP rose too.
Adamantium Skin5Passive: more DEF, Max HP and HP recovery for the homunculus (level 5: DEF +20, Max HP +10%, recovery +25%).Amistr Bulwark 3
Blood Lust3Raises its attack power for 1 to 5 minutes, and each hit may heal it for 20% of the damage dealt.Evolved, intimacy 910Its damage rose by about half at level 3.

Filir

SkillMax levelWhat it doesNeedsWhat the test showed
Moonlight5It pecks the target 1 to 3 times; more pecks and more damage at higher levels.Dealt damage.
Flitting5Raises its attack power and attack speed for 40 to 60 seconds.Moonlight 3Its attack delay got shorter.
Accelerated Flight5Raises its Flee by 20 (level 1) to 60 (level 5) for 40 to 60 seconds.Flitting 3Its Flee went up.
S.B.R.443It gives up intimacy to hit the target very hard.Evolved, intimacy 910Its intimacy fell sharply.

Vanilmirth

SkillMax levelWhat it doesNeedsWhat the test showed
Caprice5Casts a random Bolt spell at the target. The Bolt's level is the skill level.Dealt damage.
Chaotic Blessings5Heals a random one of three: an enemy, you or itself. The chances change with the skill level.Caprice 3
Instruction Change5Passive: more INT and STR for the homunculus (level 5: INT +5, STR +4).Caprice 5
Self-Destruction3It blows itself up: damage in a 9x9 area that ignores DEF and grows with its Max HP (1x, 1.5x or 2x). It needs intimacy 450, and its intimacy falls to the lowest level.Evolved, intimacy 910It fainted and its intimacy fell.

Homunculus S

A Genetic or Biolo with a level 99 evolved homunculus can mutate it. Go to Viorel in the Geneticist Lab . He asks you into his house, and you choose:
Viorel in game
Viorel:
The five Homunculus S types side by side; in the game you have one at a time. in game
The five Homunculus S types side by side; in the game you have one at a time.
  • Mutation stabilization, 50,000 zeny: you pick the kind: Eira, Bayeri, Sera, Dieter or Eleanor.
  • Unstable mutation: no zeny, and the kind is random.
A Homunculus S levels to 275. It does not evolve. The food of each kind and every skill with its level is on the Biolo page.
A Biolo with his Homunculus S, Eira. in game
A Biolo with his Homunculus S, Eira.

What the skills do

These Homunculus S skills were cast in game one by one and worked. What each does is from the in-game skill text (or the skill code where the client has none).
Eira casts Eraser Cutter on a Poring. in game
Eira casts Eraser Cutter on a Poring.
KindSkillWhat it doesIn the test
EiraOvered BoostRaises its Flee and attack speed and yours, but halves the DEF of both. When it ends, its fullness and your SP are halved.Flee and attack speed rose for both.
Eraser CutterNeutral magic damage to one target (900% MATK at level 1, 2700% at level 10).Dealt damage.
Xeno SlasherWind magic damage to the enemies in an area (3x3 cells at level 1, 9x9 at level 10), with a chance of Bleeding.Dealt damage.
Twister CutterWind magic damage to one target, hits more than once and ignores DEF. It grows with the skill level, its base level and INT.Dealt damage.
Absolute ZephyrWind magic damage in an area around the target (1 to 4 cells), hits more than once and ignores DEF.Dealt damage.
Silent BreezeHeals the target and silences it (no skills) for 9 to 21 seconds. It can be cast on you.Your HP rose.
BayeriStahl HornHits the target, pushes it 1 cell back and may stun it (22% at level 1). More damage the higher its base level.Dealt damage.
Heilige StangeHoly magic damage to the target and the enemies around it (3x3 cells at level 1, 7x7 at level 10).Dealt damage.
Glanzen SpiesHoly damage to one target within 3 cells, ignores DEF. It grows with the skill level, its base level and VIT.Dealt damage.
Goldene FerseRaises its Flee and attack speed for 30 to 90 seconds. Its hits (and Stahl Horn) sometimes deal Holy damage. Not together with Angriffs Modus.Its Flee went up.
Stein WandPuts a Safety Wall on it and on you for up to 90 seconds.DEF and MDEF rose for both.
Angriffs ModusRaises its ATK but lowers its DEF and Flee for 30 to 90 seconds. Level 5: ATK +150, DEF -70, Flee -75. Not together with Goldene Ferse.Its damage rose, DEF and Flee fell.
SeraSummon LegionA swarm of bees attacks one enemy for 20 to 60 seconds: Hornets at level 1, Giant Hornets, then Luciola Vespas.5 monsters appeared and vanished at the end.
Needle Of ParalyzeHits the target and may paralyze and poison it: it cannot move, casts slower and has less DEF (35% chance at level 1).Dealt damage.
Poison MistPoison mist on the ground that poisons and may blind the enemies in it (20% at level 1, 60% at level 5) for 12 to 20 seconds.Dealt damage.
Toxin Of MandaraNeutral damage in an area (1 to 4 cells) that ignores DEF, and it leaves a lingering effect on the targets for 2.5 to 7 seconds. It grows with the skill level, its base level and DEX.Dealt damage.
Needle StingerPoison damage to one target within 7 cells, ignores DEF. It grows with the skill level, its base level and DEX.Dealt damage.
Pain KillerReduces the damage and the hit delay that you or an ally take, but lowers attack speed, for 30 to 120 seconds.It put the Pain Killer status on you.
DieterLava SlideA ground attack that damages the enemies in range, with a chance of Burning (5% at level 1, 50% at level 10).It hit the dummy 4 times.
Blast ForgeFire attack on the cell next to it, lasting 5 seconds. It grows with the skill level, its base level and STR.It only worked with the target right next to it.
EleanorStyle ChangeSwitches its fighting style between Fighter and Grappler. In the Fighter style it gains spirit spheres when it hits or is hit.The grappling skills worked after it.
Sonic ClawFighter style: one attack for every spirit sphere. It cannot be used with no spheres.Nothing happened with 0 spheres; it hit once spheres were built.
Silvervein RushFighter style: only after Sonic Claw, uses 1 sphere. Damage with a chance to stun (5% at level 1).Dealt damage.
Midnight FrenzyOnly after Silvervein Rush, uses 2 spheres. Damage that may cause Fear. Sonic Claw works again afterwards.Dealt damage.
Tinder BreakerIt grabs the target; neither can move and both have 0 Flee for a while. Uses 1 sphere.It pulled the target 2 cells.
Continual Break ComboOnly after Tinder Breaker, uses 1 sphere. Damage that keeps draining the target's SP (extra damage on monsters).It needed the Grappler style.
Eternal Quick ComboOnly after Continual Break Combo, uses 2 spheres. Damage and stun; lowers the target's Max HP, ATK and DEF. Not on bosses.The target's Max HP fell by 2% per level.
The One Fighter RisesIt fills its spheres to the maximum, then hits the target and the area around it.Dealt damage.
Blazing And FuriousIt rushes up to an enemy and hits the area around it once for every sphere it has. It does nothing on a friendly target.It hit a monster; nothing happened on you.
Skills that were cast but showed nothing a test could read (for example Light of Regenerate, a revive) or could not be checked yet are not in this table.

More

  • The Biolo page lists every Homunculus S skill with the level it is learned at.
  • A mercenary is the other companion you can have: hired for 30 minutes at a guild.