The classic D&D monsters only rarely inspire me, so I make up a lot of creatures in my dungeon. Here's a bit of second level dungeon vermin:
No. Enc: 1d6 (2d6)
Movement: 90' (30')
Armor Class: 7
Hit Dice: 2
Damage: 1d6 + poison, attachment
Hoard Class: See below
These arthropods are 3’ long centipede-like creatures, with two pairs of 4” fangs jutting from the upper and lower jaws, and six segmented eyes. The teeth prevent the fangopede from closing its mouth all the way, lending it a fearsome aspect. The poisonous bite of the creature will paralyze its victim for 1d6 rounds if a save is failed. Additionally, the fangopede’s jaws will lock shut after a successful bite attack – no further damage is caused by the fangopede, as the enzymes in its saliva dissolve flesh far too slowly to have an impact in melee combat, but the victim suffers a +1 penalty to AC for each fangopede dangling from his body.
To remove a fangopede after it has locked its jaws shut, the arthropod must be killed and its jaws cut free from its head.
Fangopedes are deeply attracted to shiny objects, and each has a 10% chance of having swallowed 1d3 gems.