Halo 4 Dr. Tillson 1 game Dr. Tillson is a character from Halo 4. Verified 21 Aug 2026 Appearances Games featuring Dr. Tillson 88 Halo 4 6 November 2012 Other characters in Halo 4 Full cast Dalton Multiplayer Announcer Interrogator Del Rio Master Chief Halsey Cortana (Performance) Roland Grant Cortana (Voice), Halsey Cortana Didact
