Homunculi are tiny servitors for alchemists. Named based on Latin names and "ulus" suffix meaning "little". Any esoteric energy can be wielded by alchemy, so there's a homunculus for every sphere. Some common examples are listed below:

Homunculus (ars corpus) (body) (mijjit) - little human

Other common homunculus:

Adamentulus: ars cupiditas, greed, parasitic energy, little diamond
Albutigriculus: ars metallum, metal, baihu jinghua, little white tiger
Anguiculus: ars infernum, ambition, infernum, little snake
Araneaculus: ars malum, manipulation, gossamer light, little spider
Atramentulus: ars negatio, void, void, little ink
Caniculus: ars bestia, fauna, nzwara murazvo, little dog
Catenaculus: ars iniuria, oppression, imperium, little chain
Cavaculus: ars organorum, abuse, hollow energy, little hollow
Corpiculus: ars cibus, multisphere, mijjit, little body
Coturniculus: ars compassion, health, curacion, little quail
Dracoculus: ars draco, dragon, draconic power, little dragon
Falculus: ars ventus, wind, kiiric yihi, little falcon
Fenestruculus: ars civitas, community, yahas, little window (for little asduidah)
Germinabuntuculus: ars laminaeum, flower, hasken fure, little blossom
Globulus: ars mutatio, change, flux, little orb
Hamuculus: ars dolor, agony, arnum, little hook
Hominalapiculus: ars terra, earth, kazaddarean, little stone person
Hominaveraculus: ars nominum, truth, waarheid, little true person (or honest person)
Hominaviridius: ars arborem, prasinofos, little green person
Homunignulus: ars ignis, lahab al'qalb, little fire person
Interituculus: ars abruptus, chaos, entropy, little decay
Marsipulus: ars deceptus, deceit, black nommos, little pouch (for little marsupial)
Maguculus: ars incantamentum, magic, mana, little mage
Messoreculus: ars mortem, death, poarta, little reaper
Nanticulus: ars divitaeum, value, mashoaab, little swimmer (for little gondal)
Nymphaculus: ars pulchrituda, love, dumaqu, little nymph
Pharmacopulus: ars bilem, multisphere, humors, little chemist (for alchemist)
Pisciculus: ars aquus, water, conflueverant, little fish
Primiculus: ars genesis, creation, foundation, little first (for little shemir)
Pontemiculus: ars vinculum, connection, ethereal energy, little bridge
Pugnuculus: ars furorem, rage, baleblood, little fist
Risuculus: ars gaudium, joy, euphoria, little laughter
Sanguiculus: ars quaestus, exploitation, quaestus, little blood
Spinaculus: ars invidia, envy, thorn energy, little thorn
Stercorulus: ars stercore, filth, brown msawhat, little roach
Vermiculus: ars pravum, stillbirth, pravum, little worm
Vitamulus: ars vita, life ashar, little life