The Avengers, Vol. 3 #6A

Earth's Mightiest Frauds?
Tension runs a bit high at Avengers mansion until Cap finally decides to investigate Project Pegasus. They snoop around a bit but don't uncover anything suspicious. The Squadron Supreme shows up and they're eager for round two. The Corruptor is revealed as the agent who was mind-controlling the Squadron, and he is defeated. Meanwhile, the real mastermind, Imus Champion, mulls over his thwarted plans.
Release Date: 1998