"Garbage day is a very dangerous day," Rocko muttered, tightening his grip on his trusty jackhammer.

The digital landscape of O-Town was buzzing with a strange, static energy. Rocko, the mild-mannered wallaby with the loud shirt, was just trying to enjoy a quiet Saturday at his job at Kind-of-a-Lot-O-Comics when the ceiling suddenly dissolved into a swirling vortex of orange light.

As the battle raged, the "RAR" compression of his world began to expand. He wasn't just a guest; he was the final piece of the puzzle, a nostalgic powerhouse proving that even a wallaby from the suburbs could survive the chaotic arena of the All-Star Brawl.

He landed with a thud on a floating platform that looked suspiciously like a giant, neon-soaked version of the Jellyfish Fields. Across from him stood SpongeBob SquarePants, squaring his shoulders, and Danny Phantom, hovering with ghostly intent.

He soon realized he wasn't just a wallaby; he was a designated combatant. Every move he made felt sharper, framed by the logic of the US NSP code running through his veins. He summoned Spunky to trip up a rampaging Reptar and used Heffer’s ghostly apparition to deliver a heavy-hitting belly flop that sent Patrick Star flying into the blast zone.