Marcus is the son of Fox and Krystal and later, Raiden's boyfriend. He has blue and white fur and green eyes.
Raiden and her friends were rescued from an army of Nefarious's troops by the Star Fox team. Marcus, who was leading the group, stated Nefarious had kidnapped his family who were attempting to rescue hostages from the robot. Marcus figured out through interrogating one of Nefarious's Blarg soldiers that Nefarious was kidnapping all of the Allstar Heroes and is going to annihilate them via a rocket. Distressed, Raiden persuades Marcus and his friends to join the Rangers to help rescue the heroes.
Marcus is a natural born leader; bold, heroic, selfless, and friendly to everyone he meets, as he first addresses the Rangers as friends. He is shown to be a charming and daring adventurer with high intelligence and intellect. He is shown to have a crush on Raiden and his brother and friends tease him about this.
Marcus has a magic staff that can fire ice and fire blasts, summon force fields, cause ground quakes, and can even turn him invisible for a short time. He also owns a small blaster.
Trivia:
Marcus is the first of his team to give dialogue.
His staff was passed down to him by his mother.