Mars is the son of Slippy and Amanda. He has green and white skin and red eyes.
Mars is a loving, open-hearted character who sometimes shows childlike naivety and innocence that is sometimes confused for stupidity. Though his siblings would say otherwise, Mars is the actual brains of the outfit, having both common sense and impressive knowledge of things from nature to science. He is also brave and fierce in battle, always rescuing those in need. He also likes to see the good in everyone, even in enemies.
Upon meeting the Rangers, Mars was overly excited and immediately became friends with the turtles and Penny.
Mars is shown to love ninjas and samurai. He wears an all black ninja outfit and wears two katanas on his back.
Trivia:
Mars is named after his red eyes.
His favorite color is also red.
It is implied he is the boyfriend to Katana.