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.'
Matt Ward
Matt Nable Cast as Ra's al Ghul On 'Arrow'
'Arrow' Casting News
The casting news never seems to end with CW's 'Arrow.' It seems they've added another familiar DC character to guest star. Amy Gumenick (Supernatural) has been cast to play Carrie Cutter aka Cupid in episodes six and seven when 'Arrow' returns for season three. Cupid has a deadly obsession with Green Arrow in the comics, and it'll be fun to see that play out...maybe not so much for Ollie.
'Arrow' Recasts Katana
It was announced a few weeks ago that Devon Aoki would be joining the cast of Arrow for Season 3 as a recurring character. It seems that due to scheduling conflicts, she'll have to leave the show. But fear not, Katana-fans, she's already been recast by someone familiar to the comic book universe. Rila Fukushima (The Wolverine) will be replacing Aoki as Tatsu Yamashiro aka Katana. While we have no confirmation yet, I think its safe to assume we'll be seeing Tatsu in Oliver's flashbacks, but I'm hoping we also get to see her in the present time as well...perhaps fighting alongside Canary, and a fiery red-head named Barbara?
'Arrow' Casts Villain Komodo
Looks like another evil archer will be visiting the streets of Starling City. Matt Ward (TRON: Legacy, Aliens vs. Predator: Requiem) has been cast to play Simon Lacroix aka Komodo. Komodo was introduced in Green Arrow's New 52 run and it looks like he'll make his first appearance on Arrow during episode two and he won't necessarily be a one-shot villain.