Scylla-Blackhart is the ancient Heraldia Shape-Shifting Vampiric Serpent of Blackhart; One of the many dimensions of Heraldia which is the demonic hell for nightmare and reincarnation. Scylla after her demise at the hands of the powerful light of the sun directed by Slayer Buffy Summers was channeled through the Ritual of Restoration to Heraldia where she was reincarnated as her former vampire self with the still able abilty of transforming into her true corporeal form. Scylla Blackhart appears in the Buffy Fanonical Comics Vivid Atmosphere, Broken Immortal, Trek Through Solace and the E-N-D.