Doctor Stavos Keniclius 5 was the fourth clone of Dr. Stavos Keniclius, a Human geneticist from Earth's Eugenics Wars era.
Keniclius 5 lived on the planet Phylos, where he continued the search for the perfect specimen for his master race designed to bring peace throughout the galaxy. (TAS: "The Infinite Vulcan")
The voice for Keniclius 5 was provided by James Doohan.
of "The Infinite Vulcan" (as published in Star Trek Log 2) describes Keniclius 5's height as being "just under twenty-four feet."