Double-click flag so that the music syncs! You can replace characters by going into their costumes and replacing the poses with your characters' poses. You can also change some of the animation code if you want it to look different. You attacked Sans. Welp, you just earned yourself a ticket to the pain train.
I got lazy during this, so if some stuff is missing, that's why. Credit to @BlueTheEpicKid for the assets. You can find he links on another AYS I made. Credit to TheInnuendoVEVO and Saster for Burning In Heck. Credit to the Indie Cross team. Credit to Toby Fox for the gaster blaster, sound effects, and creating Sans.