Adrianne Palicki, who starred in the never-aired Wonder Woman pilot and played Lady Jaye in the last G.I. Joe movie, will join Agents of SHIELD as Mockingbird, a.k.a. Bobbi Morse (ironic...it's as if they're mocking somebody, or something...I wonder what?). As the Hollywood Reporter notes, the character was mentioned in a video shown at Comic-Con.
Somehow I don't think she'll be wearing the costume shown above, or even the oversized yellow sunglasses she's also known for. Though I'd love to see Marvel try it.