Marquez
Lieutenant junior grade Marquez was a Starfleet science officer serving in the Stellar sciences department aboard the  in 2369.

He participated in the mission to rescue the Bersallis III colonists from the fire storms native to the planet, and was tasked with the job of tracking the storms and updating other Enterprise-D teams on its path. ()

Marquez passed Doctor Beverly Crusher and the Ferengi scientist Doctor Reyga in a corridor and was greeted by Crusher. ()

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Humans
Starfleet sciences personnel
USS Enterprise (NCC-1701-D) personnel