Rosa Romano's father was a Templar but she never knew it, when she was young her father was killed and so she wanted to seek revenge on the man who killed him. She spots Ezio  sprinting on the rooftops, not knowing who he is.  She follows him up onto the roof and asks to join the assassins. He trains her to be a skilled assassin. However, she soon finds out the truth. She is a very clumsy but smart woman.  She is confident and kind, but she can kill you no problem if you piss her off.