Tulok was a hologram, based on Tuvok, that was a character in a holonovel written by the Doctor entitled Photons Be Free. (VOY: "Author, Author")
- Fans have speculated that this specific type of facial hair on a Vulcan is a reference to mirror universe Spock's similar goatee, but Mirror Tuvok had no such goatee.
- Like Tuvok, Tulok was portrayed by Tim Russ.