To recap, here’s a (partial) list of the sci-fi royalty that has popped up on Warehouse 13 at some point: Brent Spiner, Kate Mulgrew, Mark Sheppard, Lindsay Wagner, Rene Auberjonois, Jeri Ryan, Sean Maher, and Jewel Staite. And now Anthony Head. But he’s not the only actor with geeky credits you’ll be seeing when season 4.5 kicks off April 29th.

Who are the others? Behold: Polly Walker (Caprica, John Carter), Enrico Colantoni (Veronica Mars, Galaxy Quest), Missi Pyle (Galaxy Quest, Charlie and the Chocolate Factory), Joel Grey (Cabaret, Buffy the Vampire Slayer), Nora Zehetner (Heroes), Kelly Hu (X2), and Steve Valentine (Crossing Jordan—maybe that’s not so geeky in the technical sense, but it was created by Tim Kring, so let it go). I challenge anyone to name another show so devoted to pulling in so many geeky actors. Seriously. I will write you a poem if you can manage it. There are times when I love what you choose to be, Syfy.

No word yet on who the non-Anthony Stewart Head actors will play, but Giles/Uther/Repo Man is slated as the villain Paracelsus, who will appear in the final three episodes of the season in a “major recurring role.” The actor’s also recently joined the cast of CW’s The Selection as their resident King, as well as Percy Jackson: Sea of Monsters as the centaur Chiron.

(via: The Hollywood Reporter)

Are you following The Mary Sue on Twitter, Facebook, Tumblr, Pinterest, & Google +?

Have a tip we should know? tips@themarysue.com