Sid Davis is not a real priest, and his priest-like clothing is merely a fashion choice. The Bible he holds is actually a handheld computer, and while it is outdated compared to Kyouji Kuzunoha's Handy Computer, it is just as powerful. On his upper body, Davis has tattoos of a Pentagram, the Tetragrammaton, Hebrew letters, and symbols of the seventy-two demons of Solomon; these act as a talisman to prevent him from summoning demons that are too powerful.[3]