I have thought of plans for the Knuckles Solo in tails.exe the fatal outcome after knuckles gets to hidden palace he sees the master emerald and starts thinking of a plan to save tails and stop darkner he decided to go to sky scantuary to and after a while he was confronted by darkner who sends sonic to face of Knuckles after knuckles defeats sonic he started going after darkner and darkner sends knuckles to scrap brain near the energy core and knuckles fights darkner and sonic comes and knuckles was going to stop him but sonic said he wanted to help him he said that after he defeated him He managed to regain control of his mind and knuckles forgave sonic and darkner tries to take control of sonic but he fails when knuckles and sonic destroy the energy core and the 2 of them escaped and we're confronted by eggman and metal Sonic and instead of hitting them you'll be in a mini game instead and if the distance reached 0 sonic and knuckles will escape in to a warp ring and be teleported to angel island while south island explodes with darkner eggman and metal Sonic in it including tails and they all died and sonic ane knuckles were the only survivors and they realized tails was also dead but at least it was over knuckles was happy that sonic was back and I know it will be like the knuckles Solo from TDS but I hope some of you will be interested in it so it is up to @Green_Metallix to figure out