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Alien Grunt is a boss in slender fortress that was introduced in the summer time update
The Alien Grunt is an alien you encounter in black Mesa, he has a lot of purplish black body plated armour that he uses he also has a mutated claw like arm and the other arm being a long stub like arm, he also has exposed flesh in some parts which are a burnt brown colour
In Slender Fortress Edit
The Alien Grunt is in boss pack 10 and is a chaser kind of like buffy where he does enough damage to one hit kill a scout and also like buffy he is known to have a stun which is quite long so if you run into stryife with this boss just stun and run. As of the Overhaul Update Part 2 Alien Grunt has become a Charger similar to Gabel.