Battle For The Neverhood
Grace was immune to Dr. Kogg's mutation formula he spread all over the Chao Village, and she and her friends go to save their mutated friends. Grace can use her halo to cure her health a little bit, spread a shockwave on the floor, and confuse enemies.
Later, Grace then fights and defeats a mutated Claude at the Wonder Circus and soon goes to Dr. Kogg's Forteress. She and her friends swim home after the Forteress exploded.