This LoRA can make the heroic homunculus Greed from Fullmetal Alchemist (2003) in both his normal form and his "Ultimate Shield" form.

Seeems to work best 1.0 to 0.8

TRIGGERS:

GreedFMAPony 1boy, {small round sunglasses|}, black hair, purple eyes, sleeveless, black vest, white fur trim, pants, ouroboros homunculus red hand tattoo \(Fullmetal Alchemist\)
UltimateShieldFMAPony 1boy, red stripe black skin, stone skin, muscular, topless, sharp claws, bald, red eyes, monstrous, sharp teeth,

I've been using this beast of a prompt for fun results with both forms of the LoRA:

score_9, score_8_up, score_7_up, zPDXL2, rating_explicit, source_anime, nsfw, uncensored,

perfect lighting, raw photo, cinematic LUT, masculine. dynamic angle, dark background, {full body and face|taking a selfie|from above|from below}, {|looking at viewer|looking to the side|}, (arrogant, intimidating), <lora:GreedFMAPony:1> {GreedFMAPony 1boy, small round sunglasses, black hair, purple eyes, sleeveless, black vest, white fur trim, pants, (ouroboros homunculus red hand tattoo) \(Fullmetal Alchemist\), {sly smirking|cruel bully|laughing at viewer|determined} facial expression|UltimateShieldFMAPony 1boy, red stripe black skin, stone skin, muscular, topless, sharp claws, bald, red eyes, monstrous, sharp teeth, sinister grin} , {fighting|running towards viewer|punching|leaping through the air|throwing a book|holding an open book|looking at phone|examining a map}, cinematic photo, best quality, amazing quality, best aesthetic, absurdres, {|retching, saliva, saliva trail, vomiting small bloody red shards|eating red crystal shards}, red shards, {(cracked skin, glowing red cracked skin)|}, {{blue||red} lightning},

KNOWN ISSUES:

Pony just butchers tattoos in training; don't expect a great Mark of Homunculus. It'll be muddied. might make a LoRA for the Ouroborus or Greed in XL to correct that
"Ultimate Shield" doesn't always make his red stripes

SPECIAL THANKS to keeaniny4 for inspiring me to Pony up Greed n sharing: she's got a Greed for 1.5 if you're interested.