Arcturus is a Martian with a red suit. His skin appears to be different than the rest of the Martians. His skin is a bit similar to Rigel except it's lighter. He also has red eyes. He appears in Aero Tube Hanger, which is the Martian's base with 4 other Martians: Vega, Cassiopea, Rigal, and Mizar. Pieces: 5, Suit: Red, Appearances: Aero Tube Hanger.
