Avengers Assemble S02E20:

Terminal Velocity

IMDb 7.1 23 min/episodeRelease:2013
The Squadron Supreme's fastest member Speed Demon is on the loose and wreaking havoc throughout Avengers Tower. Hulk must save the day by fighting the high velocity villain. Meanwhile, the other Avengers face off against Hyperion.
Director: Philip Pignotti
Writer: Jacob Semahn