|“||Those things can eat through metal!||”|
— Matt upon seeing the creature's tunnels.
Crawlies are new creatures featured in Season 2's episode Molon Labe. They are apparently in the employ of the Overlords. They are deployed when the Overlords need to infiltrate a position to take it by surprise instead of their more typical frontal assaults.
They are about the size of human hand and a dull blue in color. They have no visible eyes and a mouth structure similar to that of a harness creature. They have six spider like limbs.
- Infiltration: Crawlies are small enough to slip into enemy structures unnoticed through vents and air ducts, and with time they can bore their way through barriers they may encounter such as doors.
- Powerful Jaws: Their jaws are strong enough to eat through metal.
- Infestation: They can hide in a human body and burst out in a manner of a trojan horse.
- Durability: They can withstand several hits by the butt of a rifle before death.According to Hal it took five hits to kill it.
- Numbers: While durable against melee-weapons, they can be killed by gunfire without too much trouble. However, they are deployed in large numbers using swarm tactics to overwhelm a position.
- Extreme blunt force trauma.
They are first encountered in the basement of the Hospital after the Second Mass captures an Overlord; apperently sent by the aliens as a means to force the humans to surrender their captive. They kill Jamil by infesting him like a Trojan horse and trap Loudres, Matt and Anne in the basement. Matt manages to escape and gets help by crawling through the vents; running into Tom and Pope and some of the others who get him to safety and rescue the girls.
The humans manage to trap the creatures in the basement but because they can eat through metal this is a temporary meassure. They are eventually destroyed when the Second Mass blows up the hospital.