Issue: #13
Last valuation update: 2023-06-30
Mastermind has gathered the Blob & Unus to form the Brotherhood of Evil Mutants!
Creators: John Costanza, Tom Sutton, Stan Lee, John Romita, Steve Englehart, Frank Giacoia
Characters: Beast, Blob, Mad-Dog, Hellcat, Unus the Untouchable, Linda Donaldson, Mastermind