Fidelacchius is one of the three Holy Swords made from the three nails of Christ's crucifixion. It used to have the form of a katana, which glows in combat, sheated in a cane-like scabbard. In the hands of Waldo Butters, it has the form of a Jedi lightsaber, capable of switching itself on when drawn from a coat pocket. It bears a single kanji on the hilt, which, according to Bob, reads Faith. Its weakness is to be wielded in an act of betrayal, and will be destroyed by it.