Actor Will of "BoJack Horseman"

ARNETT

This voice actor also played Gob Bluth on a beloved dysfunctional family sitcom.

This clue refers to Will Arnett, the actor who voiced the title character in the animated series BoJack Horseman. The show’s name is a pun on a "horse man," blending the idea of a horseman with the protagonist’s name, BoJack. Since the clue gives the first name "Will" and the show’s title, the answer is simply the actor’s last name, "ARNETT." It’s a straightforward reference to his well-known role.