superbitch       
noun [ C ]  offensive (also super-bitch) uk/ˈsuː.pə.bɪtʃ/ us/ˈsuː.pɚ.bɪtʃ/
 (尤指电影电视剧中)极坏的女人;悍妇
a very unkind or unpleasant woman, especially in a TV series or a film
  The actress plays the soap's latest superbitch.
 She plays a super-bitch in the hit TV show. 她在这部热门电视剧中扮演一个极坏的女人。 
 - More examples
 - I play the role of a superbitch who takes control of the business.
 - Her character is a superbitch who is always picking on smaller kids.
 - Her superbitch character is about to leave the show.
 - She gives a great performance as the super-bitch that rejects her family in her search for power.