The Five were a group of 19th century scientists and paranormal researchers studying abnormals, who were dedicated to expanding their knowledge of the physical world even by the most unconventional means. Though it may not be their official symbol, the Five often seem to represent themselves with a five-point pentagram. This was used on the tablet in the vampire city of Bhalasaam, and was also engraved on each of their personal keys. The keys were used to unlock a protected vial with the source blood.