who would see cyberdemon pick a fight against?

All right, of the following 5 characters from the games NOLF, Blood, and Half-Life, would you like a Cyberdemon to try to kill?

Err, why did I poll for the Garg? The Cyb would just launch him back to Xen. Argh argh...ups

I have no idea who the hell any of those are, but Gene Worm sounds the most intriguing.