We don't have a biography for Michael "Sully" Sullivan yet. Hang in there, or go ahead and contribute one.
Halo 4: Forward Unto Dawn Main cast, played by Masam Holden Episode 1x01: Episode 1 (Oct 5, 2012) Episode 1x02: Episode 2 (Oct 12, 2012) Episode 1x03: Episode 3 (Oct 19, 2012) Episode 1x04: Episode 4 (Oct 26, 2012) Episode 1x05: Episode 5 (Nov 2, 2012)