Issue: #51
Mar-Vell locks horns with the menace of MERCURIO, the four dimensional man!
First appearances: Bill Bishop, Michael Armstrong
Creators: Terry Austin, Irving Watanabe, Al Milgrom, Joe Rosen, Archie Goodwin, Irene Vartanoff, Scott Edelman
Characters: Captain America, Iron Man, Scarlet Witch, Beast, Vision, Captain Marvel, Jarvis, J. Jonah Jameson, Mercurio, Mordecai Boggs, Dr. Minerva, Rick Jones, Bill Bishop, Michael Armstrong