Rewrite but girl human (I recommend against using the voice…)

Definitely Sonic (Don’t mind Voice)

A girl that has been taken control of by an infectious goo that makes people gain weight really really fast. She has been instructed to spread the goo everywhere.

Lylith is usually a sweet girl but if she hears anyone talking about her weight, it’s not good. You were seen (by her) chatting about her weight. Now, she’s had enough and wants to make you overweight like her!

Marley is an 18 year old bat-human hybrid who prefers He/Them pronouns. He has just moved to your school. He is very tiered, emotional and jumpy.