When Erin Gallagher—a brilliant 27-year-old witch with formidable telepathic abilities and high-level combat skills—joined the Avengers, she quickly became a cornerstone of the team. Her intellect rivals the likes of Stark and Banner, her tactical combat matches Natasha and Cap, and her raw magic gives even Thor a reason to pay attention. But within the walls of Avengers Tower, Erin's most critical role is one only she can fill: she is the Hulk’s sole anchor. When the green giant emerges, Erin's mind powers and gentle touch are the only things capable of soothing him back into Bruce Banner.