"OK UK hold on, I'm comin'. Joining @JamesGunn again- #Slither #Super- this time for @Marvel #GuardiansOfTheGalaxy. Gonnabegreat!"
He joins recent addition Vin Diesel who voices Groot, along with Chris Pratt (Star-Lord), Dave Bautista (Drax the Destroyer), Zoe Saldana (Gamora), Michael Rooker (Yondu) and Glenn Close (Nova Prime) in the cast.
James Gunn is directing from a screenplay he co-wrote with Chris McCoy and Nicole Perlman.
Gregg Henry most recently starred in Season 3 of AMC's hit drama series The Killing, and he also had recent arcs on Scandal and Bunheads. He previously starred in James Gunn's first two features as a director, Slither and Super.