Nimue, Lady of the Lake

Nimue (ニミュエ Nimyue?), more frequently referred to by her title Lady of the Lake (湖の貴婦人 Mizūmi no kifujin?) , is a character in Sonic and the Black Knight. She is the alternate reality doppelgänger of Amy Rose from the world of Camelot. She is a skilled enchantress and former guardian of the sacred sword Excalibur.

Meister of War
Nimue debuted as a mentor and a helper to her Warrior student, Knuckles Riso, who defeated the evil Merlina in Knuckles and the Black Knight.