Rakuyou (落形, Rakuyou lit. Fallen Form) is known as the first and "original" Mavro to come into existence, in an estimated time of 10,000 years ago, as well as the first Impure Mavro, possessing the body of a Quincy, as such, he can be considered the "ancestor" or "father" of all Mavro, as he is responsible for many more Mavro to be born, by helping them transform. Many centuries later, he wanders the spiritual realms, with no clear goal in mind.