How do Manchester Black and the Beyonder travel through dimensions?

My sources (http://tvtropes.org/pmwiki/pmwiki.php/WesternAnimation/SupermanVsTheElite) point to the use of a starship named “Bunny” which, for reasons unknown, resembles a large fish.

If you think of other realms of existence as being the realm of the gods and the underworld, Hermes used his winged sandals to get around and many of the ancient Greeks believed that certain bodies of water could act as portals to the land of the dead.