Michael Angarano Reacts To Fan Theories About His 'This Is Us' Character Nicky - Watch Here!

Michael Angarano stopped by The Tonight Show Starring Jimmy Fallon on Tuesday (November 20) and dished all about joining the cast of This Is Us as Jack Pearson’s (Milo Ventimiglia) mysterious little brother, Nicky!

The 30-year-old actor shared his grandma’s very supportive voicemail, and admitted that his sister, who is a big fan of the show, has become obsessed with the mundanities of his time on set, trying to see if she can get a few spoilers out of him.

Jimmy also took a shot at trying to squeeze spoilers out of Michael by having him react to some of the biggest fan theories out there, including the theory that Nicky is still alive in present day – Watch him react to the theories below!