Cast members Tom Kenny (Ice King), John DiMaggio (Jake), Olivia Olson (Marceline), and everyone's favorite growing boy adventurer himself, Jeremy Shada (Finn), came by the MTV livestream during the show to talk about walking around Comic-Con, being inside of the Ice King's mouth, and voice acting as a career.
DiMaggio, in particular, got to speak a bit about his upcoming documentary, "I Know That Voice." On producing the documentary--which is out later this year--DiMaggio says he "wanted to show everybody what it's like--the 20 questions you always wanted to ask a voice artist, but were afraid to ask."
Also, listen to Olivia Olson get metal as she does a demonic voice when Marceline makes a demonic transformation.
The next "Adventure Time" episode, "Sky Witch," premieres tonight on Cartoon Network.