Lucius Aelius Sejanus
Monica Black (1970)
Marcus Vitel, born Lucius Aelius Sejanus, was a powerful Cainite who spent years masquerading as a Ventrue. His deception was so thorough, he managed to become the Prince of Washington without attracting suspicion.
Lucius Aelius Sejanus was a Roman soldier who served as Emperor Tiberius' voice, secret policeman and enforcer. Embraced into the Lasombra, Sejanus travelled through Europe, until eventually arriving in America and voluntarily entering torpor.
He rose again in 1954 finding that Washington D.C. had grown up around him, and took the identity of Marcus Vitellus, a Ventrue and former Roman Legionaire. The powerful Lasomba entered into a love/hate struggle with Marissa, the former prince of D.C. This culminated in Marissa's final death and with Vitel finding evidence that Marissa had information on Vitel's unknown sire.
Vitel was a paranoid control freak of the first order, the evidence that Marissa was involved with his sire, along with his acquisition of a magical clasp that makes it surprisingly easy for him to masquerade as a Ventrue (Lasombra do not cast reflections, but Vitel's clasp allows him to do so), as well as his rapid rise to power have all made him certain that he is the pawn in some deeper struggle.
Vitel ruled D.C. to a degree that no other Prince would dare (although he never attempted to control the U.S. government, for the Camarilla would squash him if that happened), and planned to use his influence to eventually launch a nuclear war that would allow him to reconstruct the world in his image.
In 1999, when the Sabbat seized D.C under the leadership of Sascha Vykos, Vitel was able to evade an assassination attempt performed by the Tzimisce and her thrall, an Assamite she called "Parmenides" (apparently, Vitel's ruse was so complete that not even the Sabbat knew his true identity). Sometime later, he attended a Conclave of Camarilla Princes that discussed further steps following the rise of the Ravnos Antediluvian. Vitel proposed amassing weapons of mass-destruction and actively preparing for Gehenna, in a manner similar to the Sabbat and it's own preparations for the nuclear war.
He was finally discovered as a traitor and met his Final Death through the joint effort of the Ventrue and Brujah. The Ventrue were represented by Jan Pieterzoon, Anton Baas and a small army of ghouls, while the Brujah were composed of archon Theo Bell, Christof Romuald, Lydia, Frankie and Baldur. Vitel took several shots to the body and head (with dragonsbreath ammo), but despite his injuries he ruthlessly killed or maimed most of his attackers before being chopped to pieces by Theo Bell using Christof's sword.
For the real life historical figure, you might also check:Sejanus
Marcus Vitel (Lucius Aelius Sejanus)
Apparent Age: Late 30′s
Physical: Strength 5, Dexterity 5, Stamina 8
Social: Charisma 7, Manipulation 5, Appearance 6
Mental: Perception 5, Intelligence 7, Wits 6
Talents: Alertness 5, Athletics 5, Brawl 5, Dodge 4, Empathy 2, Intimidation 6, Leadership 6, Streetwise 2, Subterfuge 5
Skills: Animal Ken 4, Crafts (Repair) 2, Drive 1, Etiquette 3, Melee 6, Performance (Acting) 6, Security 1, Stealth 3, Survival 4
Knowledges: Bureaucracy 5, Finance 2, Investigation 2, Law 4, Linguistics 5, Medicine 1, Occult 5, Politics 6, Science 1
Disciplines: Auspex 5, Celerity 4, Dominate 5, Fortitude 5, Obfuscate 6, Obtenebration 5, Potence 4, Presence 7, Protean 5, Thaumaturgy 5, Vicissitude 3
Thaumaturgical Paths: Lure of Flames 5, Movement of the Mind 5, Weather Control 5
Backgrounds: Allies 6, Contacts 8, Fame 1, Influence 8, Resources 6, Retainers 5, Status 6
Virtues: Conscience 2, Self-Control 5, Courage 5
Morality: Humanity 2
Notes: Vitel’s extra level of Obfuscate allows him to cloak his lineage from anyone who traces it either mystically or otherwise. His extra levels of Presence allow him to inspire rage in others and give him the capacity cut the emotional ties between people. Also, despite his proficiency with Thaumaturgy, Marcus has no knowledge of blood magic.