Characters in Star Trek - The Eugenics Wars - The Rise and Fall of Khan Noonien Singh

James T. Kirk

Also in Captain's Peril, Star Trek, Star Trek Adventures - Trek to Madworld, Star Trek - Mirror Universe - Spectre, Star Trek - The Prometheus Design, Killing Time, Star Trek Myriad Universes - Echoes and Refractions, Star Trek - Time for Yesterday, Avenger, Preserver

Khan Noonien Singh

Also in Star Trek Myriad Universes - Echoes and Refractions

Mr. Spock

Also in Harlan Ellison's The city on the edge of forever (teleplay), Star Trek, Star Trek Adventures - Trek to Madworld, Star Trek: Strange New Worlds: The High Country, Star Trek - The Prometheus Design, Star Trek - Vulcan's Soul - Exodus, I Am Spock, Imzadi, Killing Time, Star Trek Myriad Universes - Echoes and Refractions

Gary Seven

Roberta Lincoln