Anthony Stewart Head might have missed Entertainment Weekly‘s 20th-anniversary reunion of the cast and creator of Buffy the Vampire Slayer, but the actor was there in spirit.

“So sad I couldn’t join the reunion – wasn’t for lack of trying – literally coincided with the tech rehearsal of Love In Idleness. Bummer,” Head tweeted on Wednesday. He added, “EW have worked hard to have my presence felt – in a portrait on set and an interview. Here’s to 20 years and a wonderful group of people x.”

In the beloved series, which ran from 1997 to 2003, Head played Rupert Giles — a demonology scholar, librarian at Sunnydale High School, and Watcher and mentor to Sarah Michelle Gellar’s titular teen superhero. Head is currently performing in a London production of Terence Rattigan’s play Love in Idleness.

Watch our exclusive People/Entertainment Weekly Network (PEN) special, EW Reunites: Buffy the Vampire Slayer, here or download the free app on on your favorite device.

See a painting of Head as well as portraits of Gellar, David Boreanaz, Alyson Hannigan, Charisma Carpenter, James Marsters, and more in EW’s exclusive reunion photo gallery, and stay tuned to for more from Head and the rest of the Buffy cast.

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