Double click to sync the music and stuff. You can replace the character's sprites by replacing their costumes, and you can even change the code to change how they appear and stuff, you know how it works.
@JCBoyALT5678 for the engine Song is Malwave, which comes from a mod called Shaggy's Alternate Universes, which I really recommend checking out @SquigglyTuff for ays Probably missing some stuff here, if so I'll update this to account for those