Daredevil; Karen Page; Foggy Nelson; Fantastic Four [The Thing; The Invisible Girl; The Human Torch [Johnny Storm]; Mr. Fantastic]; Electro
The Thing and the F.F. hire Matt to look over the new lease on the Baxter Building; Matt goes to inspect the property but, unbeknownst to him, Electro has broken in to steal all of Reed Richard's secrets; Mayhem ensues.
The X-Men [Professor X; The Angel; The Beast; Cyclops; Marvel Girl [Jean Grey]; Iceman]; The Blob (introduction)
Professor X detects a new mutant and sends the X-Men to investigate; They arrive at a carnival and encounter the Blob, a very fat sideshow attraction who can bounce bullets off of his malleable hide as well as anchor himself to the earth and become immovable; The X-Men bring him back to the mansion as a potential member but the Blob spurns their invitation and returns to the carnival; Realizing that the Blob knows their secret, the X-Men lure him back to the mansion where Xavier wipes his memory.