Harlequin

"Behind the gaudy costume and twisted smile lies the soul of a merciless assassin. You call yourself the Harlequin. Your victims will call you a walking nightmare."

- GameStop

The Harlequin is an exclusive multiplayer character featured in Assassin's Creed Brotherhood, available via pre-order on Gamestop.com. It is also available by buying the Limited Codex Edition (currently available in Europe and Australia). It is stated by Ubisoft that he might also make an appearance in the single-player mode, along with the other multiplayer characters. He uses two thin, needle-like daggers.

Unique moves
(link to vidio Harlequin Trailer )

The Killing Joke:
The Harlequin stabs the back of the victims neck, flips over their back, then stabs the victim in the heart and to the right of the chest cavity, leaving them incapacitated and internally bleeding to death.

Sacrifical Strike:
From behind, the Harlequin impales his twin blades into his target's neck, causing them to go limp. The body then falls to the ground as he withdraws them.

More is Merrier:
The Harlequin pushes his target down and stab their chest maniacally three times. (link to video here @ 1:37)