I have a neon blue California Red-sided Garter and I named him Wakko after Wakko Warner from the 90s cartoon Animaniacs. Wakko wore a red hat and a oversized blue turtleneck. I thought it was fitting.. I also have a few non-garter snakes;

Emerald Tree Boa - Jarvis (Ironman)
Brazilian Rainbow Boa - Caçadora or Dora for short... means huntress in Portuguese.
Dumerils Boa - Khan... see Star Trek II.