W. Mayer was a member of Starfleet in the 22nd century.
In January of 2155, Mayer worked in EGIL at the Fleet Operations Center on Earth. Mayer's office was located in room 1368. (ENT: "Demons" set artwork)
Mayer's name was seen on directory listings seen on the set of "Demons".
W. Mayer was named after Enterprise dolly grip William Mayer.