Marvin holding his arm. The arm is part of the animal anatomy. Most species have two arms. One game that is played using the strength in a person's arm is called arm wrestling. Once Marvin's steel wristband was caught in a wave of magnetism which pulled his arm upward, and he was unable to get his arm to come down. References Super Friends Season 1: The Shamon 'U' (1973) Footnotes ↑ As seen in The Shamon 'U' (1973). ↑ As seen in The Shamon U (1973). External Link Arm at Wikipedia Retrieved from "https://superfriends.fandom.com/wiki/Arm?oldid=59062" Categories: Anatomy Community content is available under CC-BY-SA unless otherwise noted.