Flavius Metellus (c. 90s BCE – 47 BCE), also known as The Lion, was the Roman proconsul of the province of Kyrenaika. He was also a leader of the Order of the Ancients during the reign of Cleopatra and a close ally of Julius Caesar.
Flavius was born in the Roman Republic to an old patrician family which had lost much of its wealth. He was later married to an unknown woman who he had a son with. Flavius later married another woman named Porcia Orestilla, which helped to restore his family's treasuries.
Flavius later rose through the ranks of the Roman army and became a close ally to Julius Caesar. Due to his distinguished military career, he was later selected to become the proconsul of Cyrenaica, a position he held until his death.
Quest for the vault
- "The Snake takes that as your answer."
- ―Flavius, moments before killing Khemu
By 49 BCE, he joined the Order of the Ancients and became one of its leaders. That year, he along with his fellow members travelled to Siwa having discovered an Isu vault beneath the Temple of Amun. The Order hoped to claim an Isu artifact hidden within the vault, using the Apple of Eden in their possession. However, when the temple priests refuse to cooperate, the Order decide to coerce the Medjay Bayek into helping them unlock the vault.
They had their soldiers capture Chenzira, a friend of Bayek's son Khemu, and convinced the boy and his mother Rebecca that they only wished to speak with the Medjay. Chenzira led the soldiers to Halma Point, where Bayek was defeated in combat and knocked unconscious, after which he was brought inside the Temple of Amun and before the Vault door. Flavius's fellow member Medunamun showed Bayek the Apple, but the Medjay did not know how to unlock the vault door. Frustrated, Flavius kicked Bayek to the ground, but was calmed down by Pothinus.
Before the interrogation could continue, the Pharaoh Ptolemy XIII, who accompanied the Order to Siwa, came to investigate. Flavius and some of the other members went to distract the Pharaoh. Khemu managed to steal a knife for Bayek, allowing the Medjay to cut free his bindings. Returning, Flavius then brandished a sword at Khemu, threatening to cut the boy's heart out if Bayek would not tell them how to open the vault. Bayek then broke free of his restraints, and a scuffle broke out between him and the Order.
Bayek pinned Flavius, holding the knife to Flavius's throat. The Roman simply sneered, taking Bayek's assault as his answer, and deflected the blade away. The blade instead struck Khemu in the chest, killing the boy instantly. A grief-stricken Bayek attempted to attack Flavius, but the latter used the Apple to knock the Medjay out. Flavius and the rest of the Order then fled the scene, leaving the Medjay for dead. Unbeknownst to Flavius, Bayek had in fact survived and began hunting down all involved in his son's death a year later. He later learned of the Order's existence and thus allied with Cleopatra to track down and assassinate every member.
In 47 BCE, Flavius accompanied Caesar during his pursue of his son-in-law Pompey. Arriving in Alexandria, they were greeted by Ptolemy XIII, who presented the head of pompey to Caesar, in hopes of gaining an alliance. During their meeting however, they were interrupted by the arrival of Aya, Bayek and Apollodorus, who carried Cleopatra in the palace with a rug. When Ptolemy demanded his guards to eliminate them, Flavius clashed with the guard but stood down at Caesar's command. Caesar demanded an audience with Cleopatra alone, ordering Flavius and Cleopatra's followers to leave the building. 
Equipment and Skills
Upon possessing the Oracle's Relic, he displayed a number of miraculous abilities. He has shown the power to create tangible-holograms of his former brothers which attack Bayek. He could also turn invisible, project golden energy and fire a kinetic blast which slows down Bayek momentarily. He is also a skilled swordsman and hand-to-hand combatant.
He is a strong political leader and mastermind, having become the leader of the Order of the Ancients due to his cruel doings. He was also able to use his influence upon Caesar to spare Septimius, despite the fact that Septimius attacked Roman Forces.