Rio Kastle (original)

Rio Kastle is originally human who died in the car accident, with the soul of the Barian Merag continuing Rio's life after her death.

History
Rio Kastle and her twin brother Reginald Kastle lived in a mansion with their parents. One night, Rio and hwe family were traveling in car smoothly, until their car accidentally got hit by Kurage while fleeing from the police. The accident killed Rio and rest of Kastle family.

Reginald and Rio were put under medical attention, but crash have hardly effected them. Meanwhile, Nasch and Merag, who are executed by Vector, were contacted by Abyss. Abyss transferred Nasch's and Merag's souls into the bodies of "Reginald Kastle" and "Rio Kastle" who had died in an accident.

Merag continued her life, without her Barian memories, as the current "Rio Kastle in the Human World.