50 years later, they were removed when Shadow fell to Earth. They were then found by Sonic the Hedgehog and given to Rouge the Bat. When she found Shadow in Dr. Eggman's base, she returned them to him. He also removed them to unleash a Chaos Boost/Chaos Blast combo on Mephiles.
In Sonic X, Super Shadow removes his limiter rings and unleashes a massive Chaos Control that causes him to fall. Sonic then brings one of them to Christopher Thorndyke and he keeps it while the other one was destroyed. In Station Break-In, Chris returned them to Shadow and they allowed him to save the Crimson Egg by overpowering the Metarex. Shadow removes them again to destroy Dark Oak and the corrupted Planet Egg.