A humanoid species of the Delphic Expanse who, in an alternate history, joined the stranded crew of Enterprise NX-01, with the Ikaaran woman Esilia becoming the wife of Jonathan Archer.
The Ikaarans are a humanoid species native to the Delphic Expanse. They are known from the Enterprise episode E², in which Enterprise NX-01 meets a version of itself that was thrown back in time and became a generational ship.
According to that crew, the first Enterprise befriended the Ikaarans during its long wait, and some of them came aboard and married into the crew. Archer's wife in that history was an Ikaaran named Esilia, and Karyn Archer, who serves aboard the second ship, is their great-granddaughter.
By 2154 the generational Enterprise carries people of human, Vulcan, Denobulan and Ikaaran descent under its captain, Lorian, the son of Trip Tucker and T'Pol. The Ikaarans who appear have distinctive ridges and markings on the forehead and temples.