Producer Kevin Feige had this to say about the news:
From his roles as Bilbo Baggins and Doctor Watson to Tim in The Office, Martin’s range from the dramatic to the comedic has consistently impressed us. We couldn’t be more honored or excited to have such a talented actor join the Marvel Cinematic Universe.
Seems like he’s bound to play a comedic relief side role if Fargo is anything to go by. This comes after the announcement of Daniel Bruhl also set to appear in the feature as Baron Zemo.