Callis is set to play The Dodger, described as "an elusive international jewel thief who imposes his plans on the innocent, forcing them to carry out his crimes under duress." He crosses paths with Stephen Amell's bow-wielding hero when Starling City's Sherwood Ruby is stolen, but he'll prove to be an elusive target.
Callis' "BSG" co-star Tahmoh Penikett recently appeared in the episode "Muse of Fire."
In other casting news ...
"American Pie" actress to headline Fox comedy. Natasha Lyonne will star in a single-camera comedy based loosely on her life. She'll play Stella, a troubled woman who is forced to move in with her conservative brother and his family after she's released from rehab. [The Hollywood Reporter]
"90210" star visits "The Client List." Trevor Donovan will play an NFL quarterback who visits Jennifer Love Hewitt's massage parlor/brothel with a kinky fetish. [Zap2it]
"Southland" adds recurring characters. Anthony Ruivivar and Annie Monroe have scored major roles in Season 5 of the TNT drama. Monroe will play a love interest for Ben McKenzie's character, while Ruivivar will play a veteran LAPD officer. [Deadline]