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21 Episodes 0 - 1967
Episode 1
Sat, Oct 29, 1966
The Raven, a villain whose hideout is hidden in a mountain near Good Haven, attacks the city with his "plastic blaster" gun. It seals its victims in plastic. The Mighty Heroes respond. Eventually, the Raven (aided by his flock of villainous birds) gets the upper hand, sealing Tornado Man, Rope Man, Strong Man and Cuckoo Man in plastic. Diaper Man sneaks into the Raven's hideout and in the fight that follows, the other heroes are free. After disposing of the Raven's flock of birds, the villain is about to strike again. However, Diaper Man flings his bottle, jamming the barrel of the plastic blaster. It is now the Raven who's sealed up.
Episode 2
Sat, Nov 5, 1966
Episode 3
Sat, Nov 12, 1966
The Junker, whose base of operations is beneath a junk yard in Good Haven, creates robots that "eat" metal. The Junker's robots consume cars, bridges and other structures. The Mighty Heroes attempt to contain the damage and eventually follow the robots back to the Junker's lair. But the villain traps the heroes inside a metal container, which he then crushes. Now, the Junker sicks his robots, saying they're free to consumer a "hero sandwich." But the heroes prevail, destroying the robots and capturing the Junker.
Episode 4
Sat, Nov 19, 1966
Episode 5
Sat, Nov 26, 1966
Episode 6
Sat, Dec 3, 1966
Episode 7
Sat, Dec 10, 1966
The Monsterizer and his gang of monsters kidnap prominent citizens of Good Haven, including the Mayor and Police Chief. They are then transformed into monsters by a device, creating more lackeys for the Monsterizer. The Mighty Heroes respond to a call for help. They attempt to reason with the Mayor and Police Chief, but instead get captured. The heroes are put into the Monsterizer's machine, with Rope Man used to tie them up. The heroes can't escape without snapping Rope Man in two. But Diaper Man uses his milk bottle to prevent the Monsterizer from activating the device. That gives the heroes enough time to escape. They eventually overpower the Monsterizer and change the Mayor and Police Chief into their old selves.
Episode 8
Sat, Dec 17, 1966
Episode 9
Sat, Dec 24, 1966
Episode 10
Sat, Dec 31, 1966
Episode 11
Sat, Jan 7, 1967
Episode 12
Sat, Jan 14, 1967
Episode 13
Sat, Jan 21, 1967
Episode 14
Sat, Jan 28, 1967
Episode 15
Sat, Feb 4, 1967
Episode 16
Sat, Feb 11, 1967
Episode 17
Sat, Feb 18, 1967
Episode 18
Sat, Feb 25, 1967
Episode 19
Sat, Mar 4, 1967
Episode 20
Sat, Mar 11, 1967
Episode 21