Interspace Armageddon - S4.E24

Marucho reveals his plan to completely delete Bakugan Interspace while his father and Kato work on an escape plan. The Brawlers round up the remaining battlers in Interspace and prepare to leave Interspace when a hoard of Chaos Bakugan suddenly appear. The Brawlers remain behind as the others escape when a mysterious Mechtogan appears and takes out the Chaos Bakugan. Spectra and Helios arrive and give time for everyone else to escape, but are caught in the deletion process! When they arrive back on Earth, they discover a mysterious dark moon in the sky. On the other side of the portal, Razenoid has come out of his cocoon and evolved.