And now, the identities of two more agents of SHIELD have been declassified as ABC announces two new additions to the cast of the Joss Whedon-created Avengers television spin-off project.According to the Hollywood Reporter, newcomers Elizabeth Henstridge and Iain De Caestecker have joined the Whedon-directed and co-scripted ABC pilot, joining the previously-announced Ming-Na Wen and Clark Gregg. Henstridge will take the role of Agent Gemma Simmons, with De Caestecker playing Agent Leo Fitz; the two will apparently "spend all their time together -- mostly bickering -- and are masters at a remarkably young age of their respective fields" according to the Reporter (Those fields are science and technology, respectively; now you see why the two would spend so much time together).

The pilot is expected to shoot early next year, from a script co-written by the Dr. Horrible's Sing-Along Blog team of Whedon, his brother Jed and Maurissa Tancheroen. The three have also worked together on the short-lived Dollhouse for Fox.

[Via THR]