Harvey Severson was a male human in Starfleet in the 23rd century. He was a rail-thin, pale-complexioned man of Swedish ancestry. In 2268 he was a senior Admiral in Starfleet. As a flag officer, Severson oversaw Operation Vanguard and was Admiral Heihachiro Nogura's supervising officer at Starfleet Command, whom Nogura viewed as a desk-bound bureaucrat. As Nogura's superior, Severson called Nogura "Chiro" - something which annoyed the Japanese admiral. (VAN novel: Storming Heaven)