Amy Adams Dr. Louise Banks Jeremy Renner Ian Donnelly Forest Whitaker Colonel G. T. Weber Michael Stuhlbarg Agent Halpern Tzi Ma General Shang Mark O'Brien Captain Marks Julia Scarlett Dan Hannah (12 yrs. old) Abigail Pniowsky Hannah (8 yrs. old) Jadyn Malone Hannah (6 yrs. old) Carmela Nozza Guizzo Hannah (4 yrs. old) Andrew Shaver Environmental Tech Shawn Campbell News Reporter Larry Day Deputy Director of the CIA Dan Ryder Pat Kiely Environmental Tech Frank Schorpion Dr. Kettler Sonia Vigneault Dr. J. Bydwell Mark Camacho Richard Riley