Angel Island is a location that appears in the Sonic the Hedgehog comic series and its spin-offs published by Archie Comics. It was a floating island from another reality and home to Knuckles the Echidna.
Knuckles and Tails used the only remaining Chaos Emerald and pieces of Tails' Tornado plane to build a trap for the Marauders, a group who had stolen the other Emeralds. This resulted in a brief battle between Knuckles and the Marauders, ending in his defeat at the hands of their leader. Tails then left to get help for the captured Echidna, hoping to find Sonic the Hedgehog.