Spaceman Astronaut

The Spaceman Astronaut was an astronaut that took the place of an Earth astronaut and came to Earth in disguise. After he tried to wreck the Space Base, Superboy stopped him, and after saving the real astronaut, he returns this alien astronaut to his own kind.

Super Powers

 * Energy Enhancement: Thanks to the Energy Transference Device, he absorbed the energy of a human astronaut, thus altered his physiology.
 * Raw Energy Projection: He was able to project energy powerful enough to destroy buildings and cars with a single blast.

Abilities
Unknown.

Weaknesses

 * Atmosphere of Earth: Without human energy, the Spaceman Astronaut would have suffocated while on Earth, because his lungs would have been unable to adapt without it.

Appearance
The Adventures of Superboy
 * The Trap of the Super Spacemen