Spider-Man [Peter Parker]; Ringmaster; Masters of Menace [the Clown [Elliot Franklin]; the Great Gambonnos [Ernesto and Luigi Gambonno]; the Human Cannonball [Jack Pulver]; Princess Python [Zelda DuBois]]; Liz Allan; Flash Thompson; Betty Brant; J. Jonah Jameson; Mrs. Van Der Twilliger; Aunt May Parker
After being released from prison, the Circus of Crime decides they no longer need the Ringmaster and become the Masters of Menace and plan an art heist.
Sub-Mariner [Namor]; GUEST: Lady Dorma; VILLAIN: It, Silent One
When a passing ship dumps a radioactive barrel into Namor's realm, he realizes the danger it poses and takes it far away from Atlantis to throw it into a deep crevasse. Little does he know that the radiation in the barrel has awakened an ancient monster who begins to menace both the surface world and the world beneath the waves alike. Thinking the monster another surface threat, Namor begins to battle it as a nearby submarine, who is also tracking the radioactive creature, begins firing torpedoes at the both of them.