TVLine Items: Arrow Adds Firefly Vet, West Wing Alum Rattles Bones, Extra Fun Night and More!

seanmaherRavenswoodAnd Arrow‘s latest villain is… a former Firefly-er.

Sean Maher has been tapped to guest-star in an upcoming episode of the CW superhero drama, per The Hollywood Reporter.

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He’ll play Mark Scheffer (aka DC Comics’ Shrapnel), a bomber who terrorizes Starling City — and Kevin Alejandro’s Sebastian Blood.

Ready for more of today’s TV dish? Well…

• West Wing fave Richard Schiff will guest-star in an upcoming episode of Bones, EW.com reports, playing the “Dr. Brennan of theoretical physics.” Olympian McKayla Maroney also appears in the installment as the rival of Schiff’s character’s daughter.

ABC has ordered two additional scripts for a pair of its freshman comedies: Super Fun Night and Back in the Game.

One Tree Hill scene-stealer-turned-Looper star Pierce Gagnon has joined Extant, CBS’ new thriller starring Halle Berry. The series centers on an astronaut (Berry) who, following a year-long solo mission, attempts to settle back in to her everyday life. Gagnon will play her son.

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Ryan Seacrest has signed a multi-year deal to continue hosting and executive-producing Dick Clark’s New Year’s Rockin’ Eve.

Suits has tapped Damon Gupton (Prime Suspect) to guest-star in Season 3.5 as James Quelling, an attorney who goes after one of Harvey’s big clients, TVLine has learned exclusively.

Sleepy Hollow has added Jill Marie Jones (Girlfriends) in the recurring role of Capt. Irving’s ex-wife, according to The Hollywood Reporter.

The Secret Life of the American Teenager‘s Francia Raisa has joined Lifetime’s drama pilot Unreal, per The Hollywood Reporter. From Buffy‘s Marti Noxon and Sarah Gertrude Shapiro, the prospective series centers on the outrageous duties of a staffer (Shiri Appleby) on a hit dating show.

Which TVLine Items have you talking today?