Dimensional Holes
From The Bakugan Wiki
Dimensional Holes are holes connecting two dimensions such as: Neathia to Gundalia, Gundalia to Earth, Neathia to Earth, Earth to Vestal, Vestal to Vestroia, Vestal to Gundalia, or Earth to Vestroia. There are currently two Bakugan that are able to create Dimensional Holes at will, and only two people.
Known Bakugan
Known People
Gallery
Dan running into a portal to Vestroia
Shun falling into a portal to Vestroia
Drago returning to Earth
Dragonoid Colossus returning to Neathia
The Battle Brawlers heading to Neathia