WILLIAM THE FIRST WEREWOLF (UNDERWORLD)
William Corvinus’s form of lycanthropy is the most primitive, and also the most potent. He has the most lupine features, with a long muzzle and pointed ears, giving him a marked resemblance to a real wolf. He is also far larger than his descendants.
William was initially born as a pure Immortal, however, he was bitten by a wolf, causing the Corvinus Strain he had been born with to mutate, making him the first Werewolf. William is the most savage Werewolf seen, with an insatiable appetite for rampage. Like those he infected, he is unable to revert to his human form, something his father attributed to his uncontrollable rage, and remained in Werewolf form for the rest of his life. Unlike later Werewolves, he has a full pelt of fur all over his body. It should also be noted that while every other Werewolf seen in the films has black or gray fur, William’s is white. He also has solid white eyes.
William doesn’t fit into the first generation of Werewolves. Being white, larger, and much more powerful, separates him from his descendants, but as a unique specimen, he does not qualify for his own Generation and should be viewed as a special case.