Halo 4 Doctor Alexander 1 game Doctor Alexander is a character from Halo 4. Verified 21 Aug 2026 Appearances Games featuring Doctor Alexander 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
