Fantastic Four: The World's Greatest Comics Magazine! #8
Title: “...To Aid The Avengers!”
Medium: comic book
Publication date: Sep 2001
Publisher: Marvel
Written by: Erik Larsen, Eric Stephenson, Kurt Busiek
Art by: Erik Larsen, Ron Frenz, Jorge Pereira Lucas, Bill Wray, Rick Veitch, Bruce Timm, Al Milgrom, Terry Beatty
20 characters in this story:
This issue features the first (and only) appearance of a device called the "Agon-Sequencer." This technology neutralizes the sacred Terrigen mist that Inhumans use to undergo the transformations which imbue them with super powers.