Painter of unusual traits (6)
I believe the answer is:
artist
'painter' is the definition.
(painter is an example)
'unusual traits' is the wordplay.
'unusual' indicates anagramming the letters.
'traits' with letters rearranged gives 'ARTIST'.
'of' is the link.
(Other definitions for artist that I've seen before include "Constable, perhaps" , "Skilled person" , "Painter in dire strait" , "Creative or skilful person" , "Eg, a painter" .)