A descendant of Jonathan Archer and the Ikaaran Esilia who serves aboard the alternate Enterprise, a generational ship thrown back to 2037 and commanded by Lorian.
Karyn Archer appears in the Enterprise episode E². She is a member of the crew of a second Enterprise which, in another version of events, was hurled 117 years into the past while using a Kovaalan subspace corridor.
The stranded crew chose to wait for their own era, raising families aboard. Karyn is the great-granddaughter of Jonathan Archer and his Ikaaran wife Esilia, and serves as a senior officer under Captain Lorian, the son of Trip Tucker and T'Pol.
She greets Archer warmly when the two ships meet in 2154 and shows him what his family became. She supports Lorian's efforts to get the original Enterprise through the corridor in time for Archer's meeting with Degra.