Loving these responses, guys.
Since I've made three (well, technically only
two) more characters since my original post, I thought I'd add where their avatars came from.
For Casimir Heliobas (whose name was taken from a Victorian fantasy novel titled
A Romance of Two Worlds), I used Moses from
The Ten Commandments. The character is meant to deliberately fit into the archetype of the wise old mentor/wizard. I also wanted to incorporate the use of a powerful and instantly recognizable voice into his character, mostly because it's easier for me to write dialogue if I know exactly what the character sounds like. The first person that came to mind was Charlton Heston, with his booming baritone. The fact that he's wearing Jedi-like robes only makes it better.
Nimdok's avatar is a piece of Spock fanart I discovered years ago (the artist attempted to combine Spock with another character played by Nimoy, Paris from the
Mission Impossible TV series). Again, I went with the theme of "who has a distinct, cool-sounding voice?" and Nimoy was the next guy who came to mind. I also liked the idea of upsetting purists by bringing a
Star Trek character into a
Star Wars RP.
Inanna Hoole went through a couple of vintage dame iterations, including Ingrid Bergman in
Spellbound. For the longest time I used Anita Louise as Titania in
A Midsummer Night’s Dream. Currently I’m using pictures of a modern model named Hannah Waites; I discovered her years ago and I love how striking her appearance is, not to mention that she has a sci-fi aesthetic going.