A member of an organization dedicated to serve their employers. The majority of the Butlers are incredibly dangerous in combat.
Sabrina Price : working for Bishop Antonio Darling in Tiraas
Wilberforce : Working for Alan Vandro in Onkawa (Probably in Tiraas as of book 11)
Spencer : Working for the Panissar family in Tiraas
??: Working for Glory in Tiraas