The Avengers: stalwart protectors of life across the cosmos. However, they are not the only superhuman team in town. Drawn together by fate, Doctor Strange assembled his Defenders of Hulk, Silver Surfer, and Namor in the early 70s. Thanks to different ideologies, the Defenders and Avengers have mixed it more than a few times. Look back at some of their more interesting team-ups (and dust-ups)!