Gobwa from That Time I Got Reincarnated as a Slime / Tensei shitara Slime Datta Ken
When I tested it some different checkpoint and LORA's it seemed to work well with this LORA.
LORA weight 0.8 works great, but feel free to adjust the strength to your liking.
Prompts that I usually used:
blue hair, pink streaks, multicolored hair, streaked hair, short hair, orange eyes, white horns, small horns, facial markings, fangs, black necktie, red skirt, black belt, black thighhighs, high collar, red jacket