This is either for Red, or for Legless It's unknown which character is an opponent because even Arthur ADJ (creator of deleted files) doesn't remember it
Deleted Files was a mod that was started in 2021, it was going to feature Old/Scrapped Lord X's designs turned into the separate characters, later Deleted Files turned into an update for Vs. Sonic.exe Mod, but it got cancelled later
Me and Cosmos (director of official parallax revival) contacted Arthur and managed to find everything from the mod we even made a server dedicated for archiving the content for it