Ezio Auditore da Firenze Leader of his gang of friends. Ezio engages in petty gang violence between his gang of friends and his rivals. He is a strong athletic male who is quite the womaniser his mother even says “You need a hobby... Besides Vaginas.” His father is secretly an assassin who fights the evil templar order. He is double crossed and he and Ezio’s brothers are hung. Before he died his father told him of a secret room which contained a chest in it Ezio found his fathers assassins robes. As soon as his father died Ezio vowed to kill those who murdered his father and brothers. He is trained to be an assassin and to fight the evil templar order.
Courtesans The Courtesans or “prostitutes” help Ezio throughout the game. He can hire and hide in a group of them so the guards won’t notice him and can use them to lure away guards and templar's that may be blocking Ezio’s path. By giving a simple command they will lure the villains away by dancing sexually for them thus allowing Ezio to carry on un noticed with his mission.
Mercenaries Ezio like the courtesans can hire them to follow him for a small fee. They are heavily armed imposing looking men. Ezio can blend with them as well as command them to distract and kill guards and other enemies. Whilst they do so Ezio can kill the guards easier than if he was on his own. Also whilst the guards are distracted with the fighting Ezio can stealthily slip away.
Thieves The thieves are like the courtesans and mercenaries combined. They are nimble on their feet and are skilled at free running. They will steal from the guards distracting them and then run away so the guards give chase clearing an area of guards. If the guards catch up with them they will then fight using there light weapons.
Leonardo da Vinci His portrayal in Assassin's Creed II depicts Leonardo da Vinci as a cheerful and optimistic man. Ezio is his best friend, and as such, he treats him like a brother and has taken great risks for trying to protect him, even though he says later in the game that courage is not his strong suit. Leonardo was also likely a homosexual. This theory is supported by the fact that in 1476, he was accused of sodomy. It is also speculated that Salai, his assistant for many years, was his lover. His painting St. John the Baptist was one of many paintings in which Salai was the model used, and upon his death in 1519, he left the Mona Lisa to him.
ClaudiaAuditoreda Firenze In the beginning of the game when Ezio knows nothing of the assassin world, a mission you can accept from her is to beat up her cheating boyfriend. You can find him flirting with another girl. After the tragic events that befell the Auditore family, Ezio vows to protect her, along with their mother, and escorts them both to the safety of the Villa Auditore. There, her uncle Mario puts her to work keeping a book of finances for the Villa; a task she finds positively scandalous, since it involves "work".