Jerry Grandenetti credit from Mark Evanier.
Villains are parodies of Marvel's Hulk and Avengers at the time of the this story: Man-Mountain (Hulk); Masked Swastika (Captain America), Sparrow (Hawkeye), Speed Demon (Quicksilver), Silver Sorceress (Scarlet Witch).
Idea from Jim Conovan, Grand Rapids, Mich.