Brendon Doyle is a mercenary secretly working for HYDRA. He stole a highly advanced suit dubbed Mauler, Doyle later used it in his continued work as a mercenary. He was later approached by Baron Zemo, who was looking to recruit him to a special division.
The Mauler armor grants its wearer increased strength, stamina, and reflexes as well as flight capability. The armor is resistant against most physical and energy-based attacks. The primary weapon is the unbelievably powerful laser cannon, but the left gauntlet is also charged with a pulsed electrical shock. The armor can provide life support for up to three and a half days in hostile environments