Rotor Walrus of Freedom Fighting fame is one of the most memorable characters from the SatAM Sonic the Hedgehog cartoon and corresponding comics. Being the resident mechanic of Knothole, Rotor is well respected by Sonic and the other Freedom Fighters, and is a veteran member. Rotor has a calm and friendly demeanor, and his fix-it-up style has earned him admiration in the many contraptions he's built and fixed. He is responsible for most of Knothole's security and surveillance systems, as well as building Sally's handheld all-purpose device, NICOLE. While his past varies between continuations, its not a topic that is usually touched upon. Overall, Rotor is a pretty straightforward and likable asset to the Freedom Fighters of any continuity, and even made a cameo in Sonic Spinball.