This is “Elise” (name not official). She is in Unity and apparently is/being hinted at as a Templar. Ubisoft is also hinting at her being Arno’s lover. I hope we can see more info on her soon, she seems interesting. Will we have another case of Altaïr and Maria where she joins the Assassins? I’m surprised no one has mentioned her!
"One day in the subway, James saw a red cat with a wound to the leg that likely resulted from a fight with another cat. It was obvious that the cat needed help. James could not pass and took the cat to the vet. With a little medical treatment and prescription drugs, the cat quickly recovered. At that point, James found it impossible to say goodbye to Street Cat Bob. Bob followed James everywhere he went. As James played the guitar on the street and Bob sat nearby, revenues increased dramatically. People found it difficult to pass when they looked at the cute kitty. James went on to write a book describing their adventures in the street which was full of life – both dramatic and comedic. In the book, James says that he could not have imagined how meeting Bob would change his life. His friendship with the cat healed him from a life that had been very hard. Most likely, if Bob could speak, he would say the same thing.”