The “Scooby Gang” has lost its heart. Nicholas Brendon, the actor who immortalized the witty, brave, and perpetually human Xander Harris on “Buffy the Vampire Slayer,” passed away in his sleep on Friday. He was 54 years old.

In a statement released to the Hollywood Reporter, Brendon’s family shared that he died of natural causes. While the actor had been open about his health battles in recent years—including a heart attack in 2022 and the debilitating effects of cauda equina syndrome—his family noted that he had been “optimistic about the future.”

“I Saw You, Nicky”

The tribute that has moved fans to tears this morning came from Sarah Michelle Gellar. Posting a vintage photo of the two on set, Gellar wrote:

“I saw you Nicky. I know you are at peace, in that big rocking chair in the sky.”

Alyson Hannigan, whose character Willow shared a legendary on-screen bond with Xander, also posted a heartbreaking message:

“My Sweet Nicky, thank you for years of laughter, love and Dodgers. I will think of you every time I see a rocking chair. I love you. RIP.”

A Complicated, Creative Legacy

Brendon’s career spanned beyond the Hellmouth, including a long-running role on “Criminal Minds” and a memorable turn in the cult sci-fi hit “Coherence.” However, it was his vulnerability that often defined his public persona. His family’s statement touched on his well-documented personal struggles, choosing to focus instead on his sensitivity and his drive to create:

“Most people know Nicky for his work as an actor… In recent years Nicky has found his passion in painting and art. Those who truly knew him understood that his art was one of the purest reflections of who he was.”

The Impact of Xander Harris

For a generation of TV viewers, Brendon’s Xander was the ultimate underdog. He didn’t have Slayer strength or magic; he had a yellow crayon and a fierce loyalty to his friends. Today, as fans share clips of his “Zeppo” moments, it’s clear that Brendon’s legacy is rooted in that very human courage.

Nicholas is survived by his twin brother, Kelly Donovan, and a massive global family of fans who will forever remember him as the man who saw his friends for who they truly were.