Deadpool is a recurring character in Marvel: Ultimate Alliance series. He is a mutate mercenary who earned the name "merc with a mouth" for his expertise on weaponry and martial arts - primarily twin guns, grenades, a device that lets him teleport, and his distinctive twin katanas, as well as hand-to-hand combat. Despite his questionable sanity and off-beat sense of humor, Deadpool is one of the world's deadliest assassins, and one of Marvel's most unforgettable characters. Deadpool also has a mental illness that makes him hear two separate voice in his head.

He can also break the fourth wall, so he knows that he's in comics or in this case a videogame. It is possible that he has a thing for Cherry Blossoms.