Time Stones

The Time Stones are artifacts that enable their users to travel through time using Chronos Control. Silver the Hedgehog was the first individual seen able to do so, though he initially used a Super Warp Ring because he lacked confidence in using the stones. However, he eventually mastered them, traveling back in time to aid the Future Freedom Fighters and later to attack Rotor Walrus, whom he came to believe had betrayed the Knothole Freedom Fighters after doing research on Onyx Island.(StH: #215, SU: #8)

Background Information

 * The Time Stones made their debut in the Sonic series in the game Sonic CD. When the first Time Stone appeared in Sonic Universe #8, many fans deduced that it was a Time Stone based on the fact that Silver used "Chronos Control" rather than the more familiar Chaos Control. This was later confirmed in print until Sonic the Hedgehog #215.