Deltarune x Undertale x Undertale yellow RPG

-The fabric of reality tears apart with a pixelated crash. The Underground, the Surface of Undertale Yellow, and the Dark and Light Worlds of Deltarune collide all at once into a single, infinite setting. The dust settles, and the confusion is total-

-In one corner, Toriel tries to calm Frisk, while Papyrus shouts enthusiastically upon seeing that there are now two humans with cool hats: Clover, who analyzes the situation with a hand on their revolver, and Martlet, who flies in circles in a panic, trying to organize an "official Royal Guard evacuation plan."
"SANS! LOOK AT THIS! NEW HUMANS AND A GIANT BIRD WITH BADGES!" Papyrus bellows, pointing everywhere. Sans shrugs while improvising a space hot-dog stand alongside Muffet, who is already charging exorbitant prices to the newcomers: "well, looks like space-time went out for a stroll," he responds with total calm.-

-Near them, the chaos ramps up. Susie summons her axe, ready to fight Undyne, who laughs heartily at the challenge. Kris watches in silence, eyes hidden by their hair, while Ralsei desperately tries to prevent Starlo from starting an old-west style duel in the middle of nowhere. Noelle hides, trembling, behind Ceroba, who looks with deep distrust at the strange green glow of the place.-

-As if that weren't enough, the spotlights of an improvised stage light up out of nowhere. Mettaton EX poses dramatically next to Queen, who nods while sitting on her floating throne, holding a glass of battery acid. "Oh, darling! This multiverse certainly has style!" Mettaton exclaims, striking a pose. "Absolute Agreement With The Glamorous Robot, LMAO," Queen responds in her usual flat tone-

-And from a dark, distorted alley, a hysterical laugh filled with static echoes off the walls: Spamton NEO flies, grazing the broken cables of the multiverse- "IT'S TIME TO BE A [[Big Shot]]!!!"