Thorak (ゾーラック?) is Jaakor's Mechtogan and is also the second Mechtogan used by Shun Kazami in Bakugan: Mechtanium Surge. He is a 2-in-1 Mechtogan along with Flytris and when they combine, they can form Duomechtra.
In Evil Evolution, he fought against Mechtavius Destroyer alongside the Brawlers. He formed Duomechtra with Flytris but was defeated easily.
Aquos, Darkus, and Haos Thoraks made brief cameos in End of the Line.
- Whenever he attacks with his dragon-like head, he says: Chain Dragon. Whether or not this is an Ability Card or simply a catchphrase is unknown.