Commander Brink was a Starfleet officer in the 24th century. In the 2360s, he served as the first officer of the USS Brattain until his death in 2367.
When the Brattain was trapped in a Tyken's Rift in 2367, he was unable to dream like the rest of the crew. The ship's engines had also become inoperative. Madness spread, and Captain Zaheva suspected Brink and several other crewmen were plotting against her, sabotaging the engines. In the end, all of the crew save one perished through homicide or suicide. (TNG: "Night Terrors")
This character was only mentioned in dialogue.