Stump Asteroid with Stump Arena.


Some TMNT stuff really isn't for little kids.

The Stump Asteroid is an asteroid. it appears in the Teenage Mutant Ninja Turtles Adventures comics, and has a large arena used for intergalactic wrestling.

The asteroid has an atmosphere where characters from various places across the Universe can breath and have their bodies protected without wearing a spacesuit. When seen in Stump'd Again!, Splinter and Ninjara sit atop the Stump Arena watching out over the Stump Asteroid and the Heavens.

While the turtles first don't know how far away from Earth they are, in the Black Hole Trilogy it's revealed to the reader that the Stump Asteroid is within Dimension X, a corkscrew-shaped galaxy, and not in the Milky Way Galaxy at all.

The Stump Asteroid also appears in the IDW continuity.