E. Matsumoto was a Starfleet officer in the 22nd century.
In January of 2155, Matsumoto worked in TELMU at the Fleet Operations Center on Earth. Matsumoto's office was located in room 1137. (ENT: "Demons" set artwork)
Matsumoto's name was seen on directory listings seen on the set of "Demons".
E. Matsumoto was named after Enterprise assistant production coordinator Eric Matsumoto.