Wasp

Wasp aka Janet van Dyne, is Yellowjacket's girlfriend. She was given Pym Particle technology which allowed her to change size, fly (in her small form), and shoot energy blasts. She spent years working alongside Hank Pym and recently started fighting crime with him. During a battle against Graviton, she and Hank Pym teamed up with Iron Man, Thor, and Hulk to stop the villain. They formed a team which Wasp named the Avengers.