M. Sussman was a 22nd century member of Earth Starfleet, one of the officers listed on the dedication plaque of Enterprise (NX-01). Sussman was listed in the group of names of representatives from Starfleet Command. (Star Trek: Enterprise set artwork)
In January of 2155, Sussman was working in Mission Operations at the Fleet Operations Center on Earth. Sussman's office was in room 1181. (ENT: "Demons" set artwork)
Sussman was named for production staff member Mike Sussman.