Doomtronic is Reptak's secondary Bakugan Battle Suit in . It has also been used by Bakugan: Mechtanium Surge Fusion Dragonoid and Infinity Helios. It was released in August 2011.
A ferocious and menacing Battle Suit, Doomtronic releases cannons from nearly every spot on its body. On top its shoulders rest an surface-to-air launcher, that is able to reach enemies soaring high above him.
Doomtronic made its debut in
, where it was used by Dark Moon Infinity Helios to try to defeat the Evolved Razenoid. It managed to land an attack, but barely did any damage.
Haos and Pyrus Doomtronics appeared in
with Mysterious Bond Reptak and Fusion Dragonoid, but Gliderak defeated both of them.
Haos Doomtronic made another appearance in
. Reptak sacrificed it and himself so Drago and Battle Suit Bash Defendtrix could successfully hit Betadron's Combustoid with its E.M.P.S.
Aquos Doomtronic has 200 Gs, a Darkus Doomtronic has 210 Gs, a Pyrus Doomtronic has 210 Gs, and a Ventus Doomtronic has 210 Gs.
Doomtronic resembles the Bakugan Trap Fortress.
Doomtronic's top cannon resembles Zukanator to a degree.
In Bakugan form, it resembles the "Thor" Unit from StarCraft 2.
It looks a lot like the Destroid Monster from Macross/Robotech.