Performer has unusual traits (6)
I believe the answer is:
artist
'performer' is the definition.
(thesaurus)
'unusual traits' is the wordplay.
'unusual' is an anagram indicator.
'traits' is an anagram of 'ARTIST'.
'has' acts as a link.
(Other definitions for artist that I've seen before include "Painter in dire strait" , "One engaged in painting" , "Painter, drawer" , "Traits (anag)" , "Eg, a painter" .)