Firstborn son of Marik Maxentius. Gave up his inheritance to join the Unknown.
Rides a Griffon named Nimbus. They bonded when Marcus was 10 years old.
At 24 years of age he decided to leave his life as an Emperor-in-waiting and join the Rift Wardens. His father pleaded with him to reconsider, but Marcus remained true to his convictions.
He rose quickly through the ranks of the Rift Wardens and was selected to be the High Constable, serving directly beneath the head of the order.