In order to return to their own "dimension" before the earth was "recycled", such extraterrestrial entities must find each other and commit mass suicide.

Garth returned to our dimension at nearly the same time he left, although he was approximately three years older upon his return.

Only those qualities of mind and body that had led to his selection in the first place kept Blade alive to return to his own dimension.

Owlman is returned to his dimension in bondage while the other villains are arrested.

Cohen says that he had heard that this would cause Trebek to return to his own dimension.

However, they return to their dimension by hotwiring his car, just as Dwayne stole his keys.

The speedsters rallied together to return to their dimension.

Afterward, the Autobots and Sari returned to their own dimension.

Eventually, Set's power was exhausted, and it returned to its dimension, imprisoning itself again; by this time, it had seven heads.

After they return back to their dimension, Chris spends six years working on a gate that will allow him to transport himself to Sonic's world.