Tikal The Echidna
Tikal is the daughter of Chief Pachacamac from the same tribe that Knuckles the Echidna descends. She first appears in Sonic Adventure and returns in Sonic Adventure 2 as a bonus character. Thousands of years before the main events of the series, she opposes her father's power-hungry ways of invading other countries. She eventually comes into contact with Chaos and a group of Chao at the shrine of the Master Emerald, who accept her due to her friendliness to them. She tries to change her father's mind about raiding the shrine for the emeralds, but he refuses to listen. After Pachacamac raids the shrine, angering Chaos, Tikal recites a poem taught to her by her grandmother and figures out how to use the Master Emerald's power. She then seals herself and Chaos into the emerald. Several thousand years later, Doctor Eggman shatters the Master Emeralds and awakens the angry Chaos and Tikal's spirit. Tikal helps the main characters defeat Chaos, and then leaves with Chaos.