Thank for all contributions and examples. I found in my notebook, from wordreference greek, κακός μπέλας,/παλιάνθρωπος,/κάθαρμα/παλιοτόμαρο and τομάρι. But I prefer καλό φρούτο, but it has connotations of the English ‘weirdo with overtones of sociopathic behaviour. This interesting note is from...