You ARE Peppino in Hallownest, with Toppins, Mach physics, super-jump, dive, wall-run and taunt.
Solo mashup: you are Peppino in Hollow Knight's Hallownest, drawn with real sprites from your own Pizza Tower copy and moving with his moveset.
The Knight is gone — Peppino runs (Mach 1 to Mach 4), jumps higher with speed, super-jumps off Mach-3 takeoffs, dives with Down and keeps the speed on landing, skids through reversals, climbs walls at Mach 3, lunges into grabs on attacks at Mach 2+, and taunts with T to recover Mach pace. Five Toppins trail behind you everywhere. Noise taunts you from the signs.
Needs Hollow Knight 1.5.78.11833 and Pizza Tower (Steam). Nothing from Pizza Tower is in the download — sprites, physics, names and texts are read from your copy at launch.