Roxtor (Rockstar (ロックスター, Rokkusutā?) in the Japanese version) is a scorpion-like BakuFusion. It fuses with Radizen to make Betakor. It was released in August 2011. He is Mira's new Guardian Bakugan in the second arc of Bakugan: Mechtanium Surge.
Roxtor is shown to speak gibberish, which only Radizen and Mira can understand. He seems to care about his peers, especially Radizen, who he wants to befriend. This was shown in Combination Impossible, where he entered the battle to help out Radizen.
The speed of Roxtor's attacks makes it a worthy adversary in battle. His powerful legs and elongated claws make him a lethal monster when provoked. Roxtor fuses with Radizen to form the mighty Betakor.
In Eve of Extermination, he battled the Nonets and the evil Mechtogan, who combined to form Mechtavius Destroyer. He combined with Radizen and with the help of Aeroblitz and Magmafury, they were able to break down Mechtavius Destroyer's shield.
In Evil Evolution, he formed Betakor with Radizen and he fought against Mechtavius Destroyer alongside Dragonoid Destroyer, Flytris, Thorak, Magmafury, and Aeroblitz. After putting up a good fight, he ends up being defeated.
In The Beginning of the End, he formed Betakor and he fought against Mechtavius Destroyer alongside Dragonoid Destroyer, Flytris, Thorak, Magmafury, and Aeroblitz.
In End of the Line, he was seen watching Dragonoid Destroyer defeat Mechtavius Destroyer alongside the other brawlers.
- Ability Cards
- Power Proniss
- Under Explosion
The Ventus version has 940 Gs, the Pyrus version has 800 Gs, the Subterra version has 850 Gs, the Subterra Baku Lava Storm version has 1020 Gs, the Aquos version has 860 Gs (980 Gs in a BakuTrinity), the Darkus Baku Cyclone Strike version has 1030 Gs, and the Pyrus Baku Camo Surge version has 1010 Gs.
- Roxtor is the first Guardian Bakugan who doesn't speak in an understandable language (in the Japanese version, only speaks with 'kyu' cries), however Radizen seems to be able to understand him.
- In Beginning of The End, however he clearly says: Oh Yeah before forming Betakor.
- It is only Subterra-attributed protagonist Bakugan whose Bakugan form is not humanoid.