The names used are from Merlin, Arrow, The Flash, Legends of Tomorrow, Star Trek: Voyager, and The X-Files.
Gaius or Elyan
Mick or Gwaine
Barry or Lancelot
Walter or Michael
Leon or Jefferson
Oliver or Harrison
Carter or Joseph
Martin or Ray
John or Roy
Percival or Harry
Rip or Fox
Mordred or Rory
Merlin or Robert
Arthur or Leonard
Tommy or Malcolm
Quentin or Cisco