In All For One, he teamed up with the other Brawler's Bakugan and battled Zenoheld and his Alternative Weapon. During the battle, he was able to damage Farbros, and, together with Rex Vulcan, held their ground against Assail Farbros, thus making him the second Bakugan (after Hydron's Dryoid) that won against Farbros. In Ultimate Weapon, he battled King Zenoheld and Farbros for a second time. However he still maintains a serious minded fighter mentality, as shown by his annoyance at Runo and Julie's girlish antics during Ultimate Weapon. He also appears to be a lot calmer now and was willing to help out Magma Wilda defeat Mylene's Macubass and saved his sister Mira Clay from getting blasted by Macubass. In Mylene's Meltdown, he battled against Shadow Prove's MAC Spider and won easily destroying the MAC Spider in the process. Later on, he and Keith Clay help Drago make his own Battle Gear: JetKor. In the end, Helios loses, and in his broken state, he accepted Drago as the Ultimate Bakugan, abandoning his evil ways and permanently sided with the Resistance, just as Masquerade and Alpha Hydranoid joined the Brawlers. With the Vexos out the way, Helios confronted Helix Dragonoid for one last battle. After the destruction of the BT System, Helios and Spectra left the Brawlers on New Vestroia. The BT System was destroyed and Drago absorbed all the attribute energies.

Unfortunately, neither of their attacks worked, so Drago flew to the atmosphere with the BT System. Helios MK2 and Cross Dragonoid went to New Vestroia to destroy the BT System which had been activated. Even with the power of Helios plus the Battle Gear, Twin Destructor, they lost, but in the process destroyed Farbros and damaged Dryoid. We don't know how, but he received an upgrade to be able to connect with Battle Gear. Drago wins and Spectra takes them to the Mother Palace, later helping Cross Dragonoid battle Farbros and Dryoid. Helios MK2 fought Cross Dragonoid again, because Dan wanted to know where the Vexos Mother Palace was and Spectra was the only one who knows where it is. He managed to defeat the last two, but lost to Drago. He made his first appearance in Spectra Rises, where Helios MK2 battled Cross Dragonoid, Magma Wilda and Minx Elfin. Whenever he stands after being rolled a ring of fire and magma appears around him. The structure of the wings and some details are also changed compared with original version. Its arms are placed at the side of the main body instead of on the back, with human-like hands instead of claw-shaped hands in original version. Its wings fold down to allow Twin Destructor and Zukanator to attach to him. Helios MK2's ball form is later changed in the anime. Its arms, with three-fingered claws, are placed on the back. Helios MK2's ball form first appears in the anime in its original version. In this form, it more resembles Viper Helios. In both the original and Battle Gear-compatible version, Helios MK2 opens up similarly to Aluze and its hidden chest laser in ball form can be seen. He hated Drago, but after losing his last battle to him he admits Drago is the Ultimate Bakugan. He can now be equipped with Twin Destructor and Zukanator. He was later upgraded with fewer spikes and has human hands instead of claw hands. He also can combine with Fencer, Scraper, Spindle, Foxbat, Leefram and Klawgor to form Maxus Helios MK2. His mechanical eye is now more advanced now, as it resembles a multi-celled lens instead of a camera lens. Helios no longer has a spinning ring in his chest, it was replaced by a hidden chest laser that can be activated by the ability Ragnarok Cannon. For example, he now has one fully mechanical rocket arm that detaches, and fires lasers and reveals a cannon on Helios' arm that shoots lasers too, but this feature can be only activated by activating the ability Dragon Pounce. In this new form, Helios is much stronger, with more highly advanced weapons. As Drago noted, his evolution was not natural.

Helios was upgraded with new mechanical parts to try to make him the Ultimate Bakugan.

Maxus helios pictures