From Hidden Frontier
Galassini serves at the Starfleet Museum in an administrative capacity. Purely a bureaucrat, he knows nothing of engineering matters regarding the vessels that have been placed at the Museum. He is a member of the Bre'elian race, the same race as former Excelsior Security Chief Lieutenant Commander Luko.
In 2376, Commander Galassini oversaw the refit of the USS Angeles. He met with Captain Janice Willcocks and delivered her new orders. He warned her that the Angeles had not been taken on a shakedown cruise. He assigned Ensign Jack Norkin to help with any repairs during the cruise to Deep Space 12. (ANG 1.01 - "Return to Duty")
Commander Galassini was contacted by Lieutenant Commander Robin Lefler in regards to the specifications of an old-style antimatter flow regulator, which she required for her repairs of the Constitution-class USS Defiant. He was unable to help her due to his lack of engineering knowledge, even though the USS Repulse, stationed at the museum, had the exact model of regulator she required. He suggested she contact the Starfleet Corps of Engineers, before ending communications due to interference generated by the Briar Patch.
Commander Galassini was played by Michael Johns in his appearances on Voyages of the USS Angeles and Star Trek: Hidden Frontier.