Assassin's Creed: Revelations multiplayer highlights the Sentinel
Brotherhood veterans with a fondness for wannabe-Assassin persona the Prowler are probably going to favour this guy.
According to the US PS Blog, the Sentinel was recruited to the Assassins at a young age, but turned his coat to join the Templars. This means he's a multiplayer persona with all the little flourishes of an Assassin, like proper hidden blades.
Assassin's Creed; revelations releases on PlayStation 3 and Xbox 360 on November 15, which happens to be today. My copy still hasn't arrived. Curses! A PC version is expected to follow.
Thanks, CVG.