In Knuckles' Chaotix:The Final Frontier, There were dead bodies of Vector, Charmy, Mighty, and Espio on the floor with the Eggman-like clock tower ruined. Both the Play and Exit Signs are now ruined and lifeless and there is now Knuckles-Like being Facing the "Exit" Sign with most of his face hidden away from the back, he has a long-bolt like tail, patches on his Shoes, Torso, and head with one of them leaking black sludge, and Screws on his gloves with Black Sludge becoming from the screws, he then says this:

"Your persistence is loyal. What a shame it had to be cut short..."

The Echidna laughed loudly before he put his hands behind his back and remained "Motionless" in his Knuckles disguise