アルカナハート
is the main antagonist and final boss of "Arcana Heart 2". She is cheerful and openhearted, but egotistical. Seven years ago, she willingly traveled to the Arcana World from the physical world and, since then, has stopped aging. Her Arcana is Mildred, the Arcana of Halo ("Light" in the English version of "Arcana Heart 3"), who is her twin sister caught in a dimensional split between her world and the spirit world and received new powers as a result. Mildred was the main antagonist and final boss of the first "Arcana Heart" game, but now serves as Angelia's guardian following her defeat.