Egghead was still obsessed with Pym and engineered the man's disgrace. Egghead approached Pym (who was operating as Yellowjacket at the time) with a prosthetic arm that he wished to give to Trish in order make amends for his previous deeds. After the arm was installed, Egghead informed Pym that the arm contained a bomb that would be detonated unless Pym complied with Egghead's commands. Egghead had Pym attempt to rob a national treasury of adamantium, and Pym was caught and arrested by the Avengers. With Pym apparently out of the way, Egghead then formed the third Masters of Evil as part of a plot against the Avengers.