Following the Skrull and Wookie from my last post (doesn't Skrull & Wookie sound like the name of a really nerdy tavern?), here's a Klingon Green Lantern:
click above for larger view
My apologies to hardcore Trekkies, the Bat'leth and D'k tahg were drawn without reference, so the details are a little sloppy. Stay tuned for more nerd synergy!