About 75% of Marvel’s 1970s output can be summarized thusly: Hero A fights Hero B due to (a) Mind Control; (b) a stupid misunderstanding; or (c) because one of them has a huge ego.
In this issue, The whole Champions team fights a mind-controlled Hercules. Except for Black Widow, who is off doing something else.
Creators: Chris Claremont (“guest writer”) and George Tuska
For the complete history of the MU, year by year, go here.