At time of viewing, I thought he was multiple personality disorder, or some variant. That would explain some of the complexities involved with his crimes and elusiveness (one of the savvy personalities taking control).
But I read this and creator talked about the voice mimicry just being part of his fantasy escapism and interests -- he liked watching movies and learning characters.
http://popwatch.ew.com/2014/03/10/true-detective-post-mortem-creator-nic-pizzoletto-on-happy-endings-season-2-and-the-future-of-cohle-and-hart/
But I read this and creator talked about the voice mimicry just being part of his fantasy escapism and interests -- he liked watching movies and learning characters.
http://popwatch.ew.com/2014/03/10/true-detective-post-mortem-creator-nic-pizzoletto-on-happy-endings-season-2-and-the-future-of-cohle-and-hart/

