My favorite Avengers is Clint Barton, code name Hawkeye, because he's competently human. He doesn't have magic powers or an awesome suit because he doesn't need them. All his skill comes from years of training and constant practice. He's a human and he can keep up with Norse gods and geniuses, he's the furthest thing from useless. Plus he has a bow and arrow and honestly if you have a bow and arrow it's guaranteed I'll love you.