Darren Cross was the protégé of Hank Pym who became the CEO of Cross Technologies. His obsession with Pym's former design of the Ant-Man Suit eventually led to Cross replicating his mentor's formula which he then intended to sell to the terrorist organization HYDRA. Using his own version of the technology, which was known as the Yellowjacket Suit, he tried to fulfill the transaction, but he was challenged by Pym and Hope van Dyne, which destroyed his research with the assistance of Scott Lang. Driven mad by the failure, Cross tried to destroy Lang's family and was eventually killed during ensuing the battle.

Powers and abilities: Size alteration, enhanced strength, flight, energy pulse stingers, genius level intellect, master engineer/scientist, skill in business.

Requested by Doom_