Tpol
She was the first Vulcan assogned to a Human vessel, The Enterprise NX-01, following Earths accidetal encounter with a Klingon, Klaang. She acted as a chaperone in exchange for starcharts. She was not accepted right off the bat. She was even referred to as a spy.
She helped uncover Suliban activity to disable the Klingon Empire. She, then, was persuaded by Archer to remain aboard.T’Pol was the first Vulcan to serve aboard a human ship. She was born to T’Les in 2088. She was betrothed to Koss as a child.
