"Buffy the Vampire Slayer" star Nicholas Brendon has died at 54, his family confirms, as grieving co-stars pay tribute to the beloved Xander Harris actor.

Buffy the Vampire Slayer’s cast are paying tribute to Nicholas Brendon following his death at age 54. The actor’s family announced in a statement shared with Us Weekly on Friday, March 20, that

Nicholas Brendon, who played Xander Harris in "Buffy the Vampire Slayer," has died at 54. His family says the actor "passed in his sleep."

Brendon died of "natural cases", his family said in a statement, remembering him as "passionate" and "sensitive".

Brendon died from natural causes at 54 on Friday. One of Nicholas Brendon's Buffy the Vampire Slayer costars is memorializing the late actor behind Xander Harris. Alyson Hannigan, who portrayed Willow Rosenberg on the series,

The actor's family shared the news of his death, writing, "Nicky loved to share his enthusiastic talent with his family, friends and fans."

Nicholas Brendon, the actor best known for playing Xander Harris on the cult television series “Buffy the Vampire Slayer,” has died at 54, his family announced Friday. “We are heartbroken to share the passing of our brother and son,

Actor Nicholas Brendon, who co-starred on TV's Buffy the Vampire Slayer as Xander Harris, has died at 54. His family confirmed his death in a statement on Friday.