Multiverse

"Do you know that there are more than fifteen quadrillion concurrent universes? It's true!"

- Bug Bite

In Transformers, the Multiverse is the overall collection of universes and timelines. The Multiverse consists of a very large number of universes, millions of which have been cataloged as universal streams.

The Transformers cartoon
Traveler's tip: If you survive passage through a black hole you may end up in a negative universe. To get back, try traveling back through the corresponding white hole.

A portal room exits down Cybertron's Planetary Corridor CB-311-B4 which was used by the Quintessons when they ruled the planet to exile prisoners to alternate dimensions. The selectable dimensions include: an ice world, a place with no physical substance, and Menonia.

Unit:E
The (or a) world of the Transformers is just one of a multiverse of limitless possibilities. (Other possibilities include G.I.Joe, Jem, and a couple other guys you might know.)