Well we were expecting to see the Rogues on 'Flash' eventually and one key member might be joining them soon...but first he'll be seen on 'Arrow.' Nick Tarabay (Star Trek Into Darkness, Spartacus) will portray Digger Harkness aka Captain Boomerang. He'll make his debut in the seventh episode of the season and then continue into the eighth episode which we know will be the crossover event episode with 'The Flash.'
Spartacus
Agents of S.H.I.E.L.D. Casting News
Yesterday we got news from the Agents of S.H.I.E.L.D. panel at SDCC about some new cast members joining the show. Lucy Lawless (Xena, Battlestar Galactica, Spartacus) will be portraying long time agent Isabelle Hartley. Nick Blood will play a mercenary character named Lance Hunter. Reed Diamond (Dollhouse, 24, Much Ado About Nothing) is going to be the main villain of Season 2, Daniel Whitehall aka Kraken. And with this intro video before the panel started, Patton Oswalt hints at another character we may see.