This Custom/Edited Classic Sonic sprite I made is a combination of - Sonic.EXE : Project Parasite by MiIes

I misread Majin Sonic's sprite : r/MisreadSprites

The evolution of VS. Sonic.exe's Majin Sonic from pre-August 2021

FNF Majin Sprite Redux by Notakin on Newgrounds

Sonic VS Majin Sonic ~ Programming Sonic Sprite Animations

The Spriters Resource - Full Sheet View - Majin Tensei (JPN) - Demons

I made a sprite edit of Sonic.EXE. It's his B3 version, since B3 Majin is green, I decided that he should be called… Scourge.PRGM! : r/FridayNightFunkin

Early Majin and Sonic.exe sprites [Friday Night Funkin'] [Mods]

Endless Cycles, Funkipedia Mods Wiki

Pixilart - majin sonic by blue-blue

Majin Sonic Redesign