Marcus is a temporary player character in Final Fantasy IX. He is a member of Tantalus and Blank's best friend, frequently referring to him as his brother and noting at one point, "There's only one man I call 'Bro'". He is also the lead actor in the play I Want to Be Your Canary and plays a character of the same name.
Marcus has a well-built physique and sports a more traditional pirate look. A light reddish bandana covers his entire head as well as the upper half of his face; however, his large nose, two sharp teeth protruding from his lower jaw, and pointed ears are visible. He wears a blue sleeveless shirt with a large collar and is torn at the bottom. A strip of white lace peeks out beneath a thick brown leather strap across his torso. He wears an equally wide brown leather belt with silver buckle over a pair of blue shorts with lacing on either side of his groin. He wears brown ankle boots with white fur cover, buckled wrist braces and a white band on his upper left arm. He has gray lines tattooed from his shoulders down to his knuckles. He carries a sword on his left hip.
Like his fellow members of Tantalus, Marcus is a skilled thief and actor. He is a kind-hearted, loyal friend who is always ready to help anyone in need. He proves to be a capable leader who is willing to set aside any differences to solve a problem.