The second character first appears in Iron Man #156 (March 1982) and was created by David Michelinie; John Romita Jr. and Pablo Marcos.

[6] Doyle reappeared during the Armor Wars when the Mauler armour was confiscated by Iron Man, who was tracking down technology based on his stolen designs.

[7] Doyle eventually gained a new Mauler suit and battled the Canadian superhero team Alpha Flight.

[14] The Mauler armor provides heavy protection from physical and energy-based attacks, boosts the wearer's strength and courtesy of turbines allows flight.

In addition to internal life support systems, a laser cannon that doubles as an electron particle gun is mounted on the left arm.