Klo appeared in the Marvel Comics Transformers comic book series, and is notable for being the location of the final battle of both the U.S. and U.K. versions of the series. Klo was introduced in issue #80 in the U.S. version, and #331 in the U.K. version. Klo is a beautiful, peaceful planet, rich in natural resources and inhabited by benign, harmless creatures called Klozians. The planet was invaded by Decepticons under Bludgeon's leadership, after the Transformers had won the war against Unicron. Following Unicron's death, Cybertron seemed to be in danger of being destroyed, so the Decepticons fled the planet in search of new worlds to conquer. They selected Klo, where they started mercilessly slaughtering the native Klozians. The Autobots tracked the Decepticons to Klo and attempted to rescue the Klozians, but weak leadership from Grimlock led to heavy casualties by the Autobots and their forces were nearly wiped out. Finally, a newly resurrected Optimus Prime and the Last Autobot arrived on Klo, and while Optimus Prime fought against Bludgeon, the Last Autobot resurrected the dead Autobots. Facing invincible opposition, Bludgeon and his Decepticons retreated back into space and Optimus Prime and his Autobots stayed to help the Klozians rebuild their planet.
Read more about this topic: List Of Transformers Planets