| Spectra Phantom|
|Relatives|| Prof. Clay (father)|
|Appearances||Bakugan Battle Brawlers: New Vestroia|
|Voiced by||Dan Petronivic|
Spectra Phantom was the former leader of the Vexos organization, but betrayed them for his own interests. He wore a red mask in a Masquerade-like fashion, battling with the Pyrus attribute. He used the Bakugan Trap Metalfencer, and was partnered with Pyrus Helios MK2. He had a devoted servant who remained by his side even after his betrayal of the Vexos, Gus Grav. Spectra also once had a goal of creating the Ultimate Bakugan, and is truly the brother of Mira Clay and the son of Professor Clay, although Professor Clay said that they were no longer father and son. After his defeat in his final battle with his biggest rival, Dan Kuso, Spectra became a member of the Bakugan Resistance and reverted to the name of his original persona, Keith Clay.
Having realized the error of his ways, Keith abandons his mask and the identity of Spectra Phantom. Helios MK2 remains his partner, and they both do what they can to aid their new allies. While Keith puts his mask and Spectra's old outfit back on when he enters battle, specifically during the processes of helping Drago find an appropriate Battle Gear and in the final battle against King Zenoheld, he now has control over his alter-ego and remembers where his allegiences now lie. After the final battle with King Zenoheld, Keith becomes a brother-like figure to Dan, staying with Mira while his old rival returns to Earth with friends Shun Kazami and Marucho Marukura. It is rumored that he will appear in Bakugan Gundalian Invaders episode 19.