Ant-Man

Scott Lang  was a former thief and electronics genius. After his daughter, Cassie, got sick, he decided to get money by breaking into Hank Pym's Lab and stealing the Ant-Man suit. After learning Scott stole it for a good reason, Hank let Scott keep the suit to be used for good. He would later be known as the tiny but great  Ant-Man, despite his disapproval of the name. He has become partners with Pym's daughter, Hope van Dyne, also known as Wasp.