noun

a person of unconventional and slightly strange views or behaviour.

he’s seen as a local eccentric

oddity,odd fellow,unorthodox person,character,individualist,individual,free spirit,misfit,oddball,weirdo,weirdie,freak,nut,nutcase,case,head case,crank,crackpot,loony,loon,one-off,odd bod,nutter,queer fish,wacko,wack,screwball,kook,wackadoo,wackadoodle,dingbat