Boasting an already star-studded line-up, Oz Comic-Con Brisbane and Sydney have added True Blood and American Horror Story star Denis O’Hare to their guest lists.

The renowned character actor, who also has credits for such films as Milk and Michael Clayton, is probably best known as the former vampire king of Mississippi, Russell Edgington, in True Blood.

O’Hare joins some esteemed company at Oz Comic-Con, including (alphabetically) Keegan Allen (Pretty Little Liars), Linden Ashby (Teen Wolf), Ian Bohen (Teen Wolf), Jed Brophy# (The Hobbit, King Kong), Jenna Coleman (Doctor Who/Victoria), Matt Davis (Legally Blonde/The Vampire Diaries), Paul Eiding (Transformers), David Giuntoli (Grimm), Tom Hopper (Game of Thrones/Black Sails), Chad Lindberg* (Supernatural/The Fast and the Furious), Michael Malarkey (The Vampire Diaries), Mark Meer (Mass Effect), Jason Momoa (Aquaman/Game of Thrones), Tim Rozon (Wynonna Earp/Being Human), Catrin Stewart (Doctor Who) and Bitsie Tulloch (Grimm).

Oz Comic-Con Brisbane Sydney

The feast for the senses will also feature exclusive Marvel and Star Wars content, together with the usual vast array of local and international comic artists, cosplay, workshops and anime and gaming areas.

Oz Comic-Con Brisbane returns to the Brisbane Convention & Exhibition Centre this weekend, September 23-24.

Oz Comic-Con Sydney returns to the International Convention Centre at Darling Harbour this September 30 – October 1.

Want to “unleash your inner geek”? Tickets are on sale now, just click here.

Sink your teeth into True Blood at JB Hi-Fi.

# Brisbane only
* Sydney only