Linus encountered Neo Ziperator as a child while absorbing a portion of energy from the Sacred Orb to become the Element. (This scene is not shown in the English dub) He then becomes his Guardian Bakugan.
Neo Ziperator made his debut in The Secret Package, with Linus, to deliver the Element to Fabia. He then sees Shun, but Ren and Jesse find Shun and Linus and challenge them to a brawl. Hawktor and Neo Ziperator were doing well through most of this brawl. Once Linehalt defeated Hawktor, Neo Ziperator defeated Linehalt, but Plitheon defeated Neo with Jesse winning Neo in the battle. Afterwards, Jesse and Ren took Neo Ziperator back to Gundalia although the Gundalians don't know yet that Neo Ziperator holds the Element.
While in the Gundalians' possession, Neo goes into a locked mode in order to protect the Element. Sid takes him from Ren in order to get some glory for himself and uses him in a battle against Dan. When Neo enters the battle field, he gives Drago the Element causing Drago to evolve into Lumino Dragonoid and Neo's body disappears. Neo reappears in Linus's dream to say goodbye to his friend.