Original by @SM64-creator -Download it from the link -Copy the files in either "MarioExe" or "SoulLuigi" -Go to your paint 3d file storage -Go into a project folder -Delete all the files -Paste the new files -Go to paint 3d!
I saw a lot of Sonic.exe models on scratch, so I decided to do Mario.exe! (if images or models used, give credit)