Discover the mysterious and fascinating background of William, the first immortal werewolf/lycan in the Underworld franchise. From the meaning behind his name to his immense power and cunning, learn about the hidden facts that make William a unique and intriguing character. Find out how he compares to other immortals and hybrids and why he is the only one that has never been turned into a hybrid. Join us in uncovering the untold secrets of William, brought to life by actor Brian Steele in the Underworld movies.