This is a fanmade battle I made for the Undertale AU Differtale, where the regular monsters/shopkeepers, ect. are replaced with the main characters! For example: Onionsan is Flowey! In this case, Aaron is Mettaton EX!
NOTE: this is NOT canon! This is just something I came up with and I thought it would be a nice idea. This isn't in the actual AU! Credit to pococikapusta
