You ARE Peppino in Hallownest, with Toppins, Mach physics, super-jump, dive, wall-run and taunt.
Requires Hollow Knight 1.5.78.11833 (the Unity 2020.2 build). The mod checks this when the game starts and switches itself off on any other build rather than loading — so if your Hollow Knight has updated past 1.5.78, Peppino will not appear. You also need Pizza Tower installed (Steam, 1.1.28 or newer): Peppino's sprites are decoded live from your own copy, and nothing from Pizza Tower is in this download. The Modding API installs automatically.
You ARE Peppino in Hallownest, with Pizza Tower's real moveset, physics and HUD.
Moveset (every number taken from Pizza Tower's own scripts): Mach Run with the real tier thresholds, Mach Jump, Mach Slide, Super Jump (attack cancels into Mach 3), mid-air Lunge, freefall Slam that keeps your speed, wall run, and Taunt. Gravity is Pizza Tower's own floaty 0.5 px/step^2, and jumps scale to Hallownest's size so they feel right here.
HUD: pizza-slice health, stage timer, rank letter, Mach meter, score, and a Toppin counter — plus all 5 Toppins trailing you around Hallownest.
Controls: move with A/D or arrows, jump with Z/Space, run and attack with X, dive with Down in mid-air, taunt with T.
Safety nets: if Peppino ever leaves the level he's pulled back to solid ground, getting wedged in terrain is detected, and his speed is hard-capped at Pizza Tower's real top speeds.
Peppino, Pizza Tower and the Toppins belong to McPig / Tour De Pizza; Hollow Knight belongs to Team Cherry. This mod is an independent from-scratch build, licensed CC BY-NC-SA 4.0.