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.
FIRE IN THE HOLE i'm probably retiring from AYS after this one tbh, thank you for all the support with these goofy projects :3 @SquigglyTuff for AYS ofc, and the BF sprite lol @SpideyPlaysMC for the chart converter @XaviersBeanie for the original AYS Tutorial Robtop for GD this AYS may have been done already but oh well