Got a few concepts.

The Oddball Optimmist - Seriously her quirk makes her look strange and seems more detrimental then positive. Having 5 semi sentient venus fly traps stuck to your body can do that.  Still she makes the best of things with her cheery disposition.  

The A-hole with something to prove - A mutant with plane engines on his forearms, bit of a speedster quirk with wind capabilities.  He makes up for his lack of control with them by having a chip on his shoulder.

The Walking Collateral Damage - Over the top musclehead with an emitter that can barely be activated without breaking something.  Think a JOJO stand connected to his body.  He's a lovable idiot though who means well.

The Nerd trying to turn her life around - A transformer with a weak constitution, a nasty lisp, and a seemingly useless quirk.  Thank goodness she's got a good head on her shoulders.  She's sick of being bullied and wants to leave her mark.

Just here to have a laugh - A transformer who becomes a gaseous form of neon that reacts violently with water.  He uses it much to everyone's annoyance.  Probably deserves to be in make up class.