Graey = Xiu = Cala = Caligo
A normally friendly if somewhat particular player.
How to pronounce them?
Graey = Just like the color, so "gray" or "grey" depending on which side of the pond you learned your English on.
Xiu = "Zow". So, pretty much the exclamation "ow" with a short "z" sound at the beginning.
Cala = "Kal-ah" there's no long "a" in the middle.
Caligo = "Kal-e-go"