Real Name


First Appearance

Space Adventures #4 (Jan. 1953)

Original Publisher


Created by

Art Cappello


Cosmium is a gravity-repelling metal mined on Pluto and reduced to a substance called Gravitex. Nucleo, the Mad Martian, is suspected to be responsible of the theft of large amounts of the Gravitex. 

Following Nucleo to the planet Doba, Commodore Rex Clive of the Space Rangers and Stella Dawn of the STARS encounter a Lizardine sent by Nucleo to attack them. Rex kills the creature, which he thinks is the last of its kind.

Public Domain Appearances

  • Space Adventures #4

See Also

Ad blocker interference detected!

Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.