Sage is an artificial intelligence character from the Sonic the Hedgehog series, first introduced in Sonic Frontiers. Created by Dr. Eggman, she serves as a highly advanced assistant and guardian program connected to the mysterious Starfall Islands. Sage is calm, analytical, and often acts as a foil to Eggman, while also developing her own perspective over the course of the story. Her role in the series centers on supporting Eggman, observing Sonic, and becoming an important figure in the conflict involving the Ancient technology and cyberspace.