Gremlin Barry is a Gremlin that was supposed to be in Epic Mickey but was removed.
He was to appear caged in the early stages of Dark Beauty Castle (at the beginning of the game) alongside Gus (who was originally supposed to be caged just like the other Gremlins) and another scrapped Gremlin named Jamface (who later appeared in Epic Mickey 2). Either Barry or Jamface would lower a bridge to the exit making exiting the area easy.