Volak was a Vulcan man who lived in the 24th century. Volak was the mate of T'Pas and the adoptive father of T'Pas's daughter, Soleta. (NF - No Limits short story: "Revelations")

In an alternate timeline where Montgomery Scott rescued James T. Kirk before he could be absorbed into the Nexus, Volak was a subcommander aboard an Alliance vessel as part of a fleet under Tal; Tal ordered Volak to tell their fleet to stand down after identifying the USS Enterprise-D as not a threat. (Star Trek novel: Engines of Destiny)