Board Thread:Arrow discussions/@comment-9346948-20170323002519/@comment-26537965-20170323185740

Duggie Davenport wrote: I did not believe that Oliver killed just because he wants to and he likes it. I guess his time on the island really did change him, It made him even more of a criminal. That was the best way of showing how much the island really changed him, He actually killed Kovar just because. This was truly amazing.

I think that Prometheus just made him think that he is doing it, because he likes it.