Crypt: That really insecure, anxiety-ridden girl/boy who just falls apart every time someone looks at them funny.
Anubias: Popular guy, funny, maybe into sports.
Hygrophila: Moderately hyper kid, occasionally its friends get annoyed with it and tries to hurt its feeling but it doesn't give a fuck and keeps being who it is.
Duckweed: That girl who got pregnant in high school, was popular before but now that she's had her kid everyone is slightly annoyed with her because she keeps using pictures of her baby as her profile picture.
Amazon Sword: Dominant, leering, manipulative. Not exactly a bully, but everyone is afraid of him anyway.
Java Fern: A little shy, but a well-rounded individual who is liked but mostly ignored by peers.
Mondo Grass: Misunderstood, looks like he'd be cool to hang out with but he's so aloof and mysterious.
Bamboo: Asian who first appears to be able to balance school and social life but eventually can't handle the pressure and melts.
Java Moss: That druggie that does every drug imaginable but doesn't get caught or die.
Just how I visualize them in my mind. : ).