'Arrow' Eyeing 'True Blood,' 'Enlisted' Alums for Season 4

Arrow season four continues to fill out its cast.

True Blood alum Rutina Wesley will play Liza Warner in a multi-episode arc, The Hollywood Reporter has learned. In comic book Lore, Liza Warner is a police officer known as Lady Cop. In an Arrow twist, she'll be a member of an anti-vigilante task force. The actress is best known for her work as Tara Thornton on HBO's True Blood, and she recently appeared on NBC's Hannibal. The Wrap first reported the casting news.

She isn't the only new face expected in Starling City. Enlisted alum Parker Young has been cast to play a love interest to Oliver's (Stephen Amell) sister Thea (Willa Holland). Thea recently parted ways with longtime love interest Roy (Colton Haynes), who has left Starling City but will still occasionally appear on the show. In addition to his work on Fox's military comedy Enlisted, Young is known for his work on ABC's Suburgatory. ET first reported the casting news.

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The new faces are part of a growing cast, which includes British actor Jimmy Akingbola as DC Comics villain Baron Reiter (AKA Baron Blitzkrieg), Neal McDonough as Damien Darhk, Alexander Calvert as Lonnie Machin/Anarky and Echo Kellum as DC superhero Mister Terrific. Falk Hentschel will be play Carter Hall/Hawkman and Danish actor Casper Crump will play the villain Vandal Savage on crossover episodes of Arrow/The Flash before moving over to upcoming spinoff Legends of Tomorrow in early 2016.

Arrow season four premieres Oct. 7 at 8 p.m. on the CW.

Aug. 11, 6:45 p.m. Updated with official character description for Wesley.