FIREFLY's Sean Maher to Guest on ARROW

The CW's Arrow has booked a FIREFLY alum.

According to The Hollywood Reporter, Sean Maher has landed a guest role on the second season of the network's runaway superhero hit as the iconic character Mark Scheffer.

As DC fans know, Scheffer is more widely known as the villian Shrapnel. Maher will appear on the tenth episode, playing the "serial bomber who places Starling City in a grip of terror and threatens the life of Sebastian Blood (Kevin Alejandro)."

ARROW stars Stephen Amell as Oliver Queen, Colin Donnell as Tommy, Katie Cassidy as Laurel Lance, David Ramsey as John Diggle, Willa Holland as Thea Queen, with Susanna Thompson as Moira Queen and Paul Blackthorne as Detective Quentin Lance.

Based on characters appearing in comic books and graphic novels published by DC Comics, Arrow is from Bonanza Productions Inc. in association with Berlanti Productions and Warner Bros. Television, with executive producers Greg Berlanti ("Green Lantern," "Brothers & Sisters"), Marc Guggenheim ("FlashForward," "Eli Stone"), Andrew Kreisberg ("Warehouse 13," "The Vampire Diaries") and David Nutter ("Smallville," "Supernatural," "Game of Thrones"). Melissa Kellner Berman ("Eli Stone," "Dirty Sexy Money") is co-executive producer. The pilot was directed by David Nutter from a teleplay by Andrew Kreisberg & Marc Guggenheim, story by Greg Berlanti & Marc Guggenheim.

ARROW airs every Wednesday on The CW.