The battle between Ant-Man and Yellowjacket takes place in Grand Theft Auto IVbr br Scott Edward Harris Lang is the second and current person to take the mantle of Ant-Man. He is a former employee of Vistacorp and the father of Cassie Lang. Scott Lang had earned a Master's Degree in electrical engineering. Scott had a daughter named Cassie with his wife Maggie. However, the company that employed Scott, VistaCorp, kept stealing from others, so that motivated Scott to hack into VistaCorp's headquarters to gain the finances to return them. Maggie and Scott divorced following his incarceration, and Maggie eventually became engaged to Jim Paxton.br br The Yellowjacket Suit was created by Darren Cross who used the Ant-Man Suit technology as a base. The partly mechanized suit was designed to be weaponized and more advanced version of Hank Pym's suit. The mechanisms in some of the metallic parts part of the suit may possibly be used for resilience or strength enhancement. It was designed with mechanical appendages on its back with the pair above the other being able to fire beams of energy.