The Keencyclopedia
Poison Slug
The most common inhabitant of the Shadowlands, Poison Slugs mean trouble twice--once if you touch them, twice if you should land in the puddles of poison they leave behind! In Keen GBC, instead of the puddles of slime, the slug charges at you! One shot stuns it permanently.
Found in: Keen 4, Keen GBC

Keen 4

Keen GBC