What do you name your 4 letters light warriors?

[FFNut]

With just 4 letters to use for naming these warriors of light, what do you name them?

[theundeadhero]

I usually name them after my friends, saving one for myself.

[Sephiroth]

Hikari - Warrior of Light
Yami - Black Mage
Sora - White Mage
Ji - Someone else