10. Lila West - Season 2
Lila was the first character, besides his brother, to truly understand and embrace who he is, Dark Passenger and all. In fact, she
likes that he's a serial killer, and kills James Doakes hoping that that will bring them closer. She's delusional, sociopathic, and an arsonist who will do anything to protect Dexter, who she believes is her soulmate. She also tries burning Dexter, Astor, and Cody alive in her apartment, which gives her a bit higher standing on this list than the previous entries. Their relationship, though flawed (and eventually quite dangerous) was one of the most interesting relationships Dexter has had in the series. Maybe if she hadn't have turned out to be such a lunatic, they could have had a future together. Dexter seems to regret killing her in the end, once again taking the life of someone who loved him for who he was.
Memorable Moment: Blows up the cabin where James Doakes is locked-up after he reveals that Dexter is the Bay Harbor Butcher