Barbas, also known as the Demon of Fear, is an ancient and powerful upper-level demon. His primary power is the ability to read the fears of his victims and use those fears against them. Barbas was originally bound to a cycle which only allowed him to return to earth every thirteen hundred years. This cycle could only be ended if he killed thirteen unmarried witches on Friday the 13th. However, Barbas has since escaped the cycle and has grown into one of the most frequently recurring and dangerous enemies of the Charmed Ones.