The Phantom Ruby (ファントムルビー Fantomu Rubī) is an object that appears in the Sonic the Hedgehog series. It is an interdimensional gemstone of incredible power that was fought over by several parties across a pair of different time periods.
Dr. Robotnik builds an amusement park in space fueled by little aliens called Wisps. Sonic and Tails have to rescue them and stop Robotnik again, but they're under attack by the Deadly Six!
