Oh, brother. This latest piece of Once Upon a Time casting gives new meaning to the phrase “adding a limb to the family tree.” TVLine has learned exclusively that the sophomore ABC drama has cast Chad Michael Collins as Gerhardt, a younger brother of David Anders’ Dr. Whale. Gerhardt is described as an athletic and good-natured military man who is filled with idealism, “the kind of son any parent would be proud of.” The character’s tie to Whale of course also hints that, given the reveal in the recent episode “The Doctor,” he is Dr. Victor Frankenstein’s brother, who at least in Once‘s interpretation, was the subject of an electrifying reanimation. Collins will guest-star in Episode 12 of Season 2. The actor’s recent TV credits include ABC’s Last Resort (as Redman, the naval officer that Serrat killed when Chaplin didn’t meet a deadline), Major Crimes, 2 Broke Girls and Ringer.