
The Planet-Splitter
Eccentric, ingenious scientist Dr. Laban has stolen the largest diamonds in the world to power his "planet splitter," a device capable of splitting a planet in half, intending to tow half of it to Earth as a second moon. While the Super Friends guard the remaining diamonds in the world, Wendy and Marvin follow Dr. Laban to his secret laboratory, where Laban tells him of his plan.
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More from this season

S1 E6
The Shamon 'U'
Dr. Shamon is using a giant magnetic "U," a laser gun, to draw a solid gold meteorite to the Earth. However, he's unaware of the fact that his "sky-mining" technique has reelased some exotic gases from the space cloud, which, when united with the oxygen in Earth's atmosphere, form a green mist and a red mist. The green mist causes animals and plants to grow many times their normal size, while the red mists causes animals and plants to shrink.

S1 E7
Too Hot To Handle
An alien from the plant Solar Terrarium moves the Earth out of its orbit and closer to the sun so his people can move from their own freezing planet. However, this causes destructive heat waves. The Super Friends are told by the government's leading scientist that a strange new wave of magnetism is drawing the Earth from its orbit toward the sun. They must discover what's causing the increased magnetic pull and stop it. The alien is stopped by the Super Friends and guest hero The Flash.

S1 E8
The Androids
A misguided scientist uses androids to try to sabotage the space program, but the Super Friends stop him. As the Super Friends watch the launch of Apollo 20, neither they nor the government know that the astronauts aboard have been replaced by androids. Apollo 20 crashes to Earth. Dr. Rebos threatens to sabotage the manned launch to Mars unless the government calls a complete halt to its space program.

S1 E9
The Balloon People
A family of aliens from the planet Balunia leave their polluted planet for a home on Earth. After their flying saucer lands, the balloon people are befriended by the Super Friends. However, the news reports of these unusual guests prompt ambitious scholar Noah Tall to devise a plan to capture the balloon people. When they're kidnapped, the Super Friends must rescue them.