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Walking Dead star Andrew Lincoln told us his show was going to “introduce a lot of new characters” in the second half of season 5 (which returns Feb. 8 on AMC). Well, we now know who will be paying one of those characters. Not only that, but the man joining the cast is the same man who played Han Solo! Which is, to say, the same man who voiced Han Solo in an episode of Phineas and Ferb. (What, you were expecting someone else?)

EW can reveal that Ross Marquand will be joining the cast of the AMC hit at some point during the last eight episodes as a character yet to be announced. However—and spoiler alert for those who do not want to know about people and events from the comic book on which the show is based—one can’t help but wonder if he will be playing Aaron, a character from the source material who first appeared in issue #67. In the comic, Aaron meets up with Rick and the group while they are on the way to Washington, D.C. and recruits them to join his walled-off community known as the Alexandria Safe-Zone. Walking Dead creator Robert Kirkman seemed to be hinting that Aaron would be making his way to TV when he mentioned on the Nov. 30 episode of Talking Dead that “a very prominent gay character from the comics” would be appearing soon on the show. That sounds like an indication as to the arrival of Aaron, although showrunner Scott M. Gimple will neither confirm nor deny.

Whomever Marquand is playing, it will not be his first appearance on the network. He also portrayed Paul Newman in “The Flood” episode of Mad Men that dealt with the assassination of Martin Luther King Jr. In fact, impressions are something of a specialty of Marquand’s. Just check out this highly entertaining clip of him doing his best Gandolfini, Pacino, Pitt, Spacey, Ford, and McConaughey. You can also see Marquand’s work on his SoulPancake/YouTube series The Impression Guys.

Oddly enough, Marquand is not the first Phineas and Ferb vet to appear on The Walking Dead. Vincent Martella, the voice of Phineas, was Patient Zero for that nasty season-four prison virus. (Martella also played Greg Wuliger on Everybody Hates Chris alongside current Walking Dead star Tyler James Williams. See! Everybody’s connected!)

Any guesses as to whom Marquand may be playing? Is he Aaron? Someone else from the comic? Someone entirely new? And for more Walking Dead intel, follow me on Twitter @DaltonRoss.