Kyle Butler is one of two minor characters who only appear while Arthur is searching for Dexter in Season 4, Episode 11, Hello, Dexter Morgan. He is the Kyle Butler that actually evades Trinity's wrath.
While Arthur Mitchell was hunting down "Kyle Butler" he came across two names in a local phone book. After Dexter finding the body of one Kyle Butler, he thought that Arthur will continue to look for another. Dexter subdues the next one on the phone book list so that he can get Arthur, when he comes searching for him. However when Arthur breaks into Kyle's home, he sees the latter's picture on a Christmas card and leaves, knowing that he is not the right person.