D. Drexler

D. Drexler was a 22nd century member of United Earth Starfleet, one of the officers listed on the dedication plaque of. Drexler was listed in the group of names of those credited for contributions to ship's spaceframe engineering. (Star Trek: Enterprise set artwork)

Background
This character Drexler was named for production staff associate Doug Drexler. This name did not originate in the dialog or script of a canon production, but was featured on a piece of set artwork. Coincidentally, Drexler also played an unnamed Starfleet ensign of the same era, as an extra in a cameo role that might be the person referred to here. It remains to be seen whether that character might've actually had the name "D. Drexler" on his uniform nametag.

D. Drexler