Yumyum

Yumyum (Japanese: ヤムヤム Yamuyamu) is one of the students of Midnight Horror School, and acts as the main antagonist along with Usop and Tubee. During the daytime, he is a rotten banana peel.

Appearance
Yumyum's head is in the shape of a banana peel, with an orange, goo-like substance, presumably coming from the rotting banana inside of his head, oozing out from stitch marks along his forehead and mouth. His eyes are orange, and his nose in in the shape of an X. The stripes on his shirt are red and black, with a white Y decorating the middle.

Personality
Being the main antagonist of the series, Yumyum is a rude, stereotypical bully, who doesn't have a filter when it comes to insulting his classmates. The most common target for his bullying is Hikky, who he often makes fun of for his unperfected wonder. However, around Liddy, Yumyum becomes easily flustered due to an unrequited crush he has on her. He cares deeply for his friends Usop and Tubee, although he isn't shy to be blunt about his negative opinions on them either if they mess up something. Whenever the banana inside of his head falls out, he becomes anxious and worried very easily, and will immediately go chasing after whatever or whoever took it to get it back.