Upgraded Original Vampire

An Upgraded Original Vampire, is a term used to describe the type of Upgraded Original vampire that Lucien Castle and Marcel Gerard became when a reversed engineered Immortality Spell was used to turn them. It was prophesied to be the undoing of the Mikaelson siblings or created from the destruction of the Original Family.
This is a branch of Original species similar to the Enhanced Original vampire, like Alaric Saltzman was formerly, which was designed to be superior to that of the Originals in very specific ways; being capable of fighting, defeating, and killing normal Originals. As an Upgraded version of an Original vampire, it possesses a bite that is capable of killing an Original as it secretes an extremely potent strain of engineered Werewolf Venom with an altered predator face and more fangs. Unlike hybrids, an Upgraded Original is a vampire infused with a werewolf bite, further distinguishing the species. 
The title 'the Beast' refers to the Upgraded Original vampire that was prophesied by Alexis. This turned out to be Marcel Gerard.