oddball (n.)
- absurd
- alien
- anomaly
- blemish
- case
- character
- crackpot
- crank
- crosspatch
- deviant
- duck
- eccentric
- fanatic
- fey
- flake
- freak
- funny
- hermit
- hobo
- impurity
- individualist
- intruder
- irregular
- kook
- loner
- maverick
- misfit
- mote
- natural
- naysayer
- nonconformist
- nut
- odd
- oddity
- off
- original
- out
- outsider
- pariah
- queer
- quiz
- recluse
- screwball
- singular
- sliver
- solitary
- speck
- splinter
- spook
- sport
- stone
- tramp
- type
- weed
- weird
- weirdo
- zealot
- zombie