Phanos the Younger was an actor and playwright active in Alexandria during the reign of Ptolemy XIII, and one of the first members of the Hidden Ones, the organization that would later transform into the Assassin Brotherhood.
In 48 BCE, Aya was being pursued by Gennadios, the Phylakitai of Alexandria for the killing of both Actaeon and Ktesos. As such, Phanos introduced Aya to Apollodorus, who gave Aya a place to refuge in. Aya's husband and Medjay, Bayek of Siwa, later came to the city in search of his love. In the Library of Alexandria, Phanos introduced himself to Bayek, giving him the details of Aya's situation. He later escorted Bayek to a small tower, containing a well which provided an entrance to Aya's hideout.
Shortly therefater, Phanos composed a comedic play which took a jab on the reign of the Ptolemies. As a result, Phanos' pay was confiscated by the Gennadios' phylakitai and his actors were imprisoned in the Akra Garrison. Phanos, refusing to be oppressed, attempted to rally the Alexandrians to rebel against the Ptolemies. This caught the attention of Bayek, who helped Phanos to rescue his actors and retrieve his script, allowing him to resume his play.
To celebrate the launch of his play, Phanos chose Bayek as his guest of honor, inviting him to his home located south of the city. Along the journey, Phanos and Bayek were attacked by the phylakitais as retaliation for Bayek's actions at the Akra Garrison. Both of them later repelled waves of attacks outside Phanos home, leading Phanos to come up with a plan to eliminate Gennadios' phylakitai once and for all.