See Mason for other articles with titles that contain, either by relationship or by coincidence, this character's surname.

Mason was a 23rd century Human individual who served Starfleet's sciences division, specializing in the field of astrobiology.

In 2268, Mason was assigned to Federation starship USS Enterprise. He was one of the crewmen selected for a theoretical landing party to survey planet Alpha Carinae II. Mason was selected by both the M-5 computer and Captain James T. Kirk for the team, based on prior experience surveying 29 biologically similar planets. (TOS novelization: The Ultimate Computer)

In TOS episode: "The Ultimate Computer", the scene where Mason's name was mentioned had the name Phillips in its place. This change was presumably derived from a revision of the script supplied to novelist James Blish.
USS Enterprise (NCC-1701) sciences personnel
under Charles Rasmussen & Robert April AllinskyGriggsOstermanRamirez under Christopher Pike CaymanDaviesLuceroReedSpockT'PrisViolaYu Starfleet emblem. USS Enterprise sciences assignment insignia.
under James T. Kirk
(first five-year mission)
AckroydAldenAmstelAristeidesAvittsBerkeleyBerganzaBerryBerrymanBomaBordellBrentCallowayCharvatD'AmatoDarnellEricksonErrgangFaustFisherFollettFreemanFreyerGalwayGiacomoGildenHarrisonHernandezHerradaHintonHomeyerHurstIrizarryJaegerJamesonJaramilloKrispLowreyMasonC. MastersMcGiversMeierMendozaMorrisMulhallNelsonO'HaraO'SheaOwensPalamasPhillipsRandallRodinoRomaineSpockSuluSydneyTambolineTracyTremainWatleyWeinbergWellsYbarra
subsequent missions under Kirk & Spock AmaarBolekChangD'HennishFisherGreywolfHaleyHester-JonesW. MeierNakashimaNarahtSaavikSagadySonakSpockTenaidaThemonTherasT'YeeWhitehorse UFP emblem. USS Enterprise sciences assignment insignia.
see also: administrative personnelcommunications personnelengineering personnelmedical personnelpilots & flight control personnelsecurity & tactical personnelsenior staff • unnamed (2240s and 2250s2260s2270s and 2280s)
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