Knockout Immunity
From The DarkMod Wiki
There is a new key available:
"ko_immune"
Setting this to "1" will make the AI immune to KO from both the blackjack and knockout gas.
To make an AI immune to the blackjack, but not knockout gas, do not set ko_immune to 1, but set the key "ko_zone" to blank, i.e., put the following in the def file or spawnArgs:
"ko_zone" ""