Seppu Visti was a Human Federation Starfleet officer in the late 23rd century. He was a small, slender, dark man of Finnish ancestry. He had a Second Thought accounting implant.
In the year 2275, Seppu Visti served the quartermaster aboard the USS Enterprise. He attended the briefing concerning Vulcan's proposed secession from the United Federation of Planets along with other department heads. (TOS novel: Spock's World)