Marci Camp was the daughter of Henry Camp, the original Bulldozer, who inherited the villain's powers as well as his training. After her father's death, Marci joined The Wizard's new Frightful Four as Bulldozer, taking her father's alias.

She and the rest of the Frightful Four attacked the Fantastic Four in Times Square under the orders of a mysterious benefactor. She and the rest of the Frightful Four were taken into custody by S.H.I.E.L.D. following their defeat at the hands of the team of heroes.