The news was announced at the CW superhero drama’s Comic-Con panel today, when the network showed a sneak peak (see below) of Season 2, which premieres October 9.

SAN DIEGO and BURBANK, Calif. (July 20, 2013) — Oliver Queen (series star Stephen Amell) will have his work cut out for him when he returns to Starling City on October 9 for the second season of The CW’s #1 series Arrow (Wednesdays 8/7c). At today’s Comic-Con panel session in Ballroom 20, fans learned of two new DC Comics characters coming to Starling City — Bronze Tiger and Sebastian Blood. Executive producers Greg Berlanti, Marc Guggenheim and Andrew Kreisberg revealed that Michael Jai White (Spawn, The Dark Knight, Mortal Kombat) will guest star as Bronze Tiger, while Kevin Alejandro (Southland, True Blood, Golden Boy) will appear as Sebastian Blood in upcoming episodes of the acclaimed action drama’s second season (airdates to be announced).

– Michael Jai White plays Ben Turner, a claw-wielding assassin better known as Bronze Tiger, who’s well known to DC Comics fans as a member of both the League of Assassins and the Suicide Squad. On Arrow, he’ll form an unholy alliance with fan-favorite villain China White (played by Kelly Hu), another well-established character in the DC Comics universe.

– Kevin Alejandro plays Sebastian Blood. Drawing inspiration from the iconic New Teen Titans nemesis Brother Blood, Sebastian is an alderman who rises to power in the wake of the earthquake that devastated Starling City in Arrow’s first-season finale. Blood’s “man-of-the-people” popularity instantly places him at odds with Oliver Queen, whose family he blames for the quake.

In terms of embracing their dark side, Michael Jai White appeared in The Dark Knight with Heath Ledger’s Joker, voiced DC Comics villain Doomsday in the animated Justice League and portrayed the hell-bound title character in New Line Cinema’s Spawn. Kevin Alejandro, on the other hand, is better known for playing cops and detectives (Southland, Golden Boy), but recently his character paid the ultimate price for practicing witchcraft in his role as Jesus Velasquez in True Blood.

Based upon characters published by DC Comics, Arrow is executive produced by Greg Berlanti, Guggenheim and Kreisberg. The series is from Bonanza Productions Inc. in association with Berlanti Productions and Warner Bros. Television.