Boomer is a protagonist in the first episode of Rebooting The Madness. He was originally an Agent until he defected to Newton Greenshades' side.
History
Boomer was monitoring Edgar GunsForHands's cell along with another agent when Newton Greenshades barged in the room. After Newton killed the other Agent in the room and drove the Freak Plant from it, he directed Boomer, the only remaining agent alive inside the room, to open the door to the cell housing Edgar GunsForHands. Boomer did so, thus freeing Edgar and allowing him to make his way through the building.
Opting to defect over being killed, Boomer joined Newton's side and Newton tossed him a gun and pair of tangerine glasses from the body of a deceased Twin. Boomer used the tangerine glasses to take control of one of the agents in the next room and use his grenade launcher to blow up the door, allowing himself and Boomer to make their way inside. Advancing to the next room, Boomer and Newton engaged in a shooting match with the agents stationed in it.
The two soon met up with Edgar, who was currently fighting the Freak Plant. Boomer used his grenade launcher to shoot the Freak Plant off of him and the three made their way together into the next room. However, in the next room, the Crab Beast burst through the floor and pulled Newton down to the room below it. Edgar and Boomer were then ambushed by Professor Dordum, but they managed to drive him into the next room.
In the next room, they found Dordum watering the floor with a watering can to grow orange-glasses agents. The two shot at Dordum, causing him to retreat to the below floor, but Dordum's agents soon sprouted and began attacking Edgar and Boomer. Boomer used his glasses to take control of Edgar and make him kill the agents. As he advanced to the next room with Edgar still under his control, Boomer was bumped into by the Stalker Agent as he was fleeing the Crab Beast, freeing Edgar from Boomer's control. Edgar then shot and killed Boomer as revenge for manipulating and controlling him.