Irish actor who plays the archaeologist Roger Korby, Christine Chapel's partner, in the third season of Star Trek: Strange New Worlds in 2025.
Cillian O'Sullivan is an Irish actor who joined Star Trek: Strange New Worlds in its third season as Doctor Roger Korby, playing him with his own Irish accent.
Korby was created for the original series episode What Are Little Girls Made Of?, where he was played by Michael Strong and was already the lost fiancé of Christine Chapel. Strange New Worlds shows the beginning of that relationship, presenting Korby as a celebrated archaeologist and scientist.
O'Sullivan first appears in Wedding Bell Blues, in which Korby arrives aboard the Enterprise with Chapel, and returns in Through the Lens of Time, Four-and-a-Half Vulcans and the season finale, New Life and New Civilizations.