Dark Thorn is one of the bosses you face from Kingdom Hearts 2 in Beast's Castle. I made this mainly because it's one of my favorite heartless designs from the series and it was long overdue. The training data isn't the biggest, but I was able to make it work. It will nail the look down, but will have some issues with posing, generating nostrils, producing 4 fingers instead of 3, not getting the heart symbol right on it's chest. and almost never getting the chin curl it has and instead generating a spike. Lower the weight by .1 -.2 if you have a hard time making the character do a pose.
Positive Prompts: ThornKH2, ambiguous gender, anthro, monster, red hair, very long hair, red horns, long horns, black sclera, yellow eyes, solid eyes, no pupils, glowing eyes, black body, green thorns, thorns on body, red tail, medium tail, silver metal cuffs, chains around arms, silver ankle cuffs, red claws, big claws, red toe claws, big toe claws
If you want bigger hair, then put "hyper hair, flowing hair" in the positive prompts. If you have the mouth open, then put "red inner mouth."