The original lineup of the West Coast Avengers was Hawkeye (as leader), Mockingbird, Tigra, Wonder Man, and Iron Man II (Jim Rhodes). This was in the mini-series that launched the group. They tried to get the Thing as their sixth member in their ongoing title but he only had an extended guest-starring role. Later on, just about everybody joined the group. Iron Man I (Tony Stark), Hank Pym, the Wasp, USAgent, the Vision, Scarlet Witch, the original Human Torch, Moon Knight (!), and many others...