Picking up from where we left off, Sonic's transformation into his fiery form brought forth Fleetway Sonic. In a brutal display, Fleetway repeatedly attacked Mecha Sonic, leaving him incapacitated. When Mario tried to intervene, he was quickly knocked out of his hammer state and defeated. This enraged Luigi, who switched from his electric form to using a crimson star, becoming Galaxy Luigi. Even Fleetway acknowledged Luigi's superior power and decided to take a more passive approach, using the Chaos Emeralds' negative energies to transform into Fleetway Dark Sonic. With one powerful strike, Luigi was knocked out of his empowered state.
Fueled by anger, Mario also tapped into the negative energies of the emeralds, transforming into Dark Mario. He and Fleetway clashed fiercely, reaching a temporary stalemate. Meanwhile, Shadow encountered a malevolent Meta Knight and accidentally transformed into Ice Shadow after touching an ice-infused flower, easily overpowering Meta Knight. Kirby, using a flame-wielding blossom to become Fire Kirby, fought Shadow until Meta Knight intervened, knocking Shadow out of his frozen state.
The return of Mecha Sonic triggered a significant reaction in Shadow, causing him to transform into Chaos Shadow. Shedding his inhibitor rings, he unleashed a devastating attack, eliminating Kirby and Meta Knight and causing a massive explosion on the vessel. After the dust settled, all fighters reverted to their normal forms, with Shadow putting his rings back on. Sonic, Mario, and Luigi emerged unscathed and determined. Realizing the futility of negative energies, Sonic and Shadow harnessed the positive energies of the Chaos Emeralds, transforming into Super Sonic and Super Shadow. Luigi and Mario also ascended to Super Luigi and Super Mario.
Despite initial struggles against the hedgehogs, the plumbers used a cape feather to boost their abilities, evening the odds. Meanwhile, Vegeta dominated Luffy in his Gear 4 form, while Goku faced tough opposition from Natsu and Gray. Pushed to his limit, Goku unleashed his Super Saiyan 3 form, matching his opponents' transformations. As Shadow subdued Mario, a new conflict in the heavens called him away, leaving Sonic to face Luigi alone.
Vegeta ultimately defeated Luffy but was then challenged by a surprisingly strong Mario, who overpowered him. Desperate, Vegeta transformed into Super Saiyan God, gaining the upper hand. Mario's attempt to boost his powers with a fire-infused bloom in his Caped Super Form failed, leading to his swift defeat. Goku, victorious against Natsu and Gray, faced a formidable Shadow who overpowered his Super Saiyan 3 and Kaioken forms, forcing Goku to ascend to Super Saiyan God to defeat him. This pushed Shadow and Sonic to use the Master Emerald to become Hyper Sonic and Hyper Shadow. Both Saiyans then transformed into Super Saiyan Blue. Following their lead, Mario and Luigi tapped into the Master Emerald's power, transforming into Hyper Mario and Hyper Luigi, while retaining their enhanced caped forms.