A Dimension Controller is a machine created by the Vestals to trap Bakugan in their ball form. When the Perfect Core inside Drago went to Earth, they seemed to expand their borders almost covering the distance of the Alpha City Controller which was the only one destroyed at the time.
Location of Controllers
These machines also use Bakugan Brawls to generate power for their respective cities. There are three, one in Alpha City, Beta City, and Gamma City but there is also a back up controller in Prince Hydron's palace. These Controllers can be destroyed if too much energy from a Bakugan Brawl is created, which overloads and destroys the system. Even though Mylene Farrow increased the dimension controller power, but it is still not enough handle the power of the Perfect Core.
- Alpha City: The controller in Alpha City was destroyed in the brawl: Lync Volan and Volt Luster vs. Ace Grit and Shun Kazami, in Episode 9.
- Beta City: The Beta City controller was destroyed during the brawl: Dan Kuso and Baron Leltoy vs. Mylene Farrow and Shadow Prove, in Episode 20.
- Gamma City: The Gamma City Controller was destroyed in these battles: Gus Grav and Mira Fermin vs. Dan Kuso and Ace Grit, Baron Leltoy vs Volt Luster, and Shun Kazami and Marucho Marukura vs Mylene Farrow and Shadow Prove, in Episode 23.
- Prince Hydron's Vestpalace: This controller was destroyed by Prince Hydron in the final brawl: Dan Kuso vs. Spectra Phantom, in Episode 26.