Marvel announced today at San Diego Comic-Con some new additions to Marvel's Agents of S.H.I.E.L.D. for Season 2.

Barbara Morse, better known as, Mockingbird will join Agents in season two, along with Lucy Lawless.  The announcements were made by Patton Oswalt in character as Agent Koenig.

At the panel, the SHIELD team also confirmed some castings: Lucy Lawless (Spartacus) is joining the show as Isabelle Hartley, Nick Blood will play a mercenary named Lance Hunter who helps with the SHIELD team and Reed Diamond (Moneyball) will play season 2’s big bad Daniel Whitehall, a Hydra villain known as Kraken.

Source: Entertainment Weekly