The "Percy Jackson" sequel is becoming something of a Joss Whedon Alumni mini-reunion.
Anthony Head, who played Buffy's patient and wise mentor on the Whedon-created series, "Buffy the Vampire Slayer," has joined the cast of "Percy Jackson & the Olympians: The Sea of Monsters," according to Heat Vision.
News of Head's casting comes hot on the heels (or is that hooves? — we'll get to that in a second) of word that Nathan Fillion, star of Whedon's "Firefly" and "Dr. Horrible's Sing-a-Long Blog," has also joined the fantasy epic in the role of the Greek god, Hermes.
Anthony Head will be playing the role of Chiron the Centaur, the half-man, half-horse who runs Camp Half-Blood, the sanctuary where demigods are trained and protected. The role was previously played by Pierce Brosnan in 2010's "Percy Jackson & the Olympians: The Lightning Thief."
Rupert Giles from "Buffy," re-imagined as a centaur? It's certainly no stretch of the imagination, is it?
The Whedon duo joins an ensemble that includes returning cast members Logan Lerman, Alexandra Daddario and Brandon T. Jackson. Missi Pyle, Yvette Nicole Brown and Mary Birdsong were also recently added to the cast as the Three Fates.
Thor Freudenthal ("Diary of a Wimpy Kid") will call the shots on "Percy Jackson & the Olympians: The Sea of Monsters," which will soon commence with production with a look toward a release date of March 26, 2013.