Sure, the show is about clones and Tatiana Maslany gets the accolades for playing them, but who has to play against them? Felix gets all the best lines and Gavaris' job of treating each clone differently in various scenes hits the mark perfectly.
Alison: This is Helena we're talking about here. She eats frozen bread and she's murdered people. Donnie: Well... so have we. Alison: That's different. Helena's trained to kill people. We're manslaughterers.