Prior to the events of AcceleRacers, his brother Kurt got him involved in a shady "business deal", but then backed out on him when he refused to give up. As a result, Mark went to prison for two years and after he was released, he refused to acknowledge Kurt as his brother after he abandoned him and joined the Metal Maniacs.
In Breaking Point, Wylde becomes the leader of the Metal Maniacs after Tork allowed him to win in a race spanning from the Acceledrome to the Handler Proving Ground and back. However, in spite of this, his members refused to listen to his orders. This causes the team to fall in a state of anarchy for the remainder of the movie. In the Junk Realm, Wylde failed to follow the apex, which at the same time, a wrecking ball launched him and his car off the track, landing in a pile of debris. He failed to activate his EDR in time, resulting in him getting trapped inside the realm, and was later captured by the Drones.
In Ultimate Race, still in captivity, Wylde's left arm was replaced with leftover Drone parts. Wylde managed to finish off RD Kadeem, who nearly killed Kurt in a fight battle. The brothers use the EDR to escape from Drone City, only to be surrounded by more Racing Drones on Earth. The brothers fought through the Acceledrome and escaped inside a hijacked Sweeper before the building blew up. They realize Vert is still missing, and they continue their search to find him.