Evil Evolution is the 41st episode of Bakugan: Mechtanium Surge. It aired on December 17, 2011.
After Wiseman revealed himself to be Coredegon, Coredegon is about to blast Drago into oblivion but the Nonets come to the Brawlers' aid. They are, however, quickly defeated by Coredegon. The battle gets more fierce as Gunz learns from Wiseman/Coredegon that he copied Gunz's appearance by absorbing his evil energy and reverting it. After that, the Nonets are told that he will give them two options, while transforming to his true Mechtogan form, they must choose to either return to the Doom Dimension or be buried alive.
Meanwhile, in the battlefield, the Brawlers summon Flytris, Dragonoid Destroyer, and Thorak, as well as creating their combinations Aeroblitz, Magmafury, and Betakor, while the four rogue Mechtogan combine into the deadly Mechtavius Destroyer. The battle is fierce, but eventually, the Battle Brawlers and Dragonoid Destroyer lose. Mechtavius Destroyer reveals that he will not be satisfied if he destroys the Battle Brawlers now, so he chooses to extend their suffering by sending them to the Doom Dimension.
In the cave, Betadron saves Gunz, who agrees to be the Nonets' battling partner, except for Worton, who chooses to return to the Doom Dimension. Gunz then puts on Wiseman's helmet and a flaming red energy covers his entire body and turns him into a new Wiseman. His red suit, according to Betadron, changed its color to reveal all his inner fire. They arrive to confront Mechtavius Destroyer just as Gunz sees the Brawlers being sent to the Doom Dimension by Mechtavius Destroyer, letting their fate unknown.
- Fusion Dragonoid
Mechtogan Combinations Seen
Mechtogan Destroyers Seen
Bakugan Battle Suits Seen
- This is the second time the Brawlers have been sent to the Doom Dimension, the first being The Brawlers' Last Stand.
- This is the final individual appearances of the rogue Mechtogan; from this episode onwards, they are all fused together. Additionally, none of them, aside from Coredegon, speak again until End of the Line.