Silver Timeline

Catherine Halsey/Silver

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This article contains information from the Silver Timeline universe, and is not a part of the established Halo canon. To see information about this article's counterpart in the canon Halo universe, see here
Catherine Halsey
Catherine Halsey vibin
Biographical information


Miranda Keyes

Personal details






Doctor Catherine Halsey is the creator of the Spartan supersoldiers.[1]

Production notes[edit]

Catherine Halsey in Halo: The Television Series is portrayed by actress Natascha McElhone.[1] McElhone was originally cast to play both Halsey and Cortana, much like Jen Taylor did for Halo 4, Halo 5: Guardians, and Halo Infinite. However, due to scheduling difficulties caused by the COVID-19 pandemic, McElhone was unable to complete her work as Cortana, so Jen Taylor was brought onboard the project to reprise her role from the games.[2]


List of appearances[edit]