Snakeoids

Snakeoids are gigantic armor-plated worm-like monsters that appear in the video-game "Zombies Ate My Neighbors", they appear to be a homage to the Graboids from Tremors and much like them attack by burrowing through the ground before leaping out to chomp at a hero or victim with their sharp fangs.

Due to their large size and durability the Snakeoids can be considered mini-bosses of sorts and normally take a few well-timed hits to take down, though their exact origin and purpose is left to the imagination (though due to their appearance it could well be that they are one of the many mad experiments of Dr. Tongue)