Actor Millen of BBC America's "Orphan Black"

ARI

This actor played a mysterious clone with a tragic fate in the sci-fi series, sharing the screen with Tatiana Maslany in a role that left fans stunned. Think short and impactful.

This clue refers to Ari Millen, the Canadian actor who played multiple clone characters in the sci-fi series Orphan Black on BBC America. The answer is shortened to "ARI," which is a common crossword convention for first names when the last name is well-known. If you’re familiar with the show, you might recognize him as the male clones like Ira or Mark, but the clue keeps it simple by focusing on his first name. The brevity fits crossword style while testing knowledge of the actor’s role.