His name is derived from “Pussy Willow”, a deciduous North American shrub or small tree(Salix discolor) having large silky catkins. Willow is a Mongolian warrior that resides in an area named Arcadia, located somewhere in the vicinity of the great San Gabriel Valley. He is known to yell out “Rainbow” when charging into the field during battle. He is often seen hanging out with those of intelligence much greater than his.
Instead of using the word "feather", Willow would describe a bird as being covered by "bird hair".