Any fictional characters that Dexter should go after? And perhaps all these don't follow Dexter's criteria for removal but the fictional world and ours would be much better without them...
http://www.ranker.com/list/fictional-characters-dexter-should-whack--v1/aargh,
Austin Powers
Cersei Baratheon
Debra Morgan
She's annoying and she tried to kill Dexter.
Joffrey Baratheon
Walter White
He's a bad man but we all love him...right?
Clay Morrow
Will Schuester
Janice Litman
Dana Brody
Joe Carroll