The Lost World

Krang and Shredder inside the Skullbuzzer spacecraft attacking the turtles and Cherubae on Hirobyl.

Hirobyl is a planet orbiting an aging and dying red giant star in Dimension X. Appearing in the Teenage Mutant Ninja Turtles Adventures, Krang is said to have destroyed all life on the planet. The decisive battle between the Turtles and Krang for the Turnstone takes place here.[1]

The name of the planet is possibly a reference to the atomic bombing of Hiroshima in August 1945 and the April 1986 Chernobyl disaster, since the planet is dying and the TMNT refer that a giant structure reminds much of the workers statues who can be seen in the former Soviet Union back in those days.