The "Worm Guys" are a group of small, slender and coffee-addicted aliens living in the Men In Black headquarters, on planet Earth. They have light-brown skin, a pair of antennae and multiple pairs of members: one pair of legs, one of fully-developed arms and three pairs of small, atrophied arms on their chest region. Their hands and feet are tridactyl (three digits). Their names are Neeble, Geeble, Sleeble and Mannix, and while the official name of their species has never been revealed, it has been referred to as "Annelids".
The Worm Guys are known to have amazing regenerating abilities, being able to literally pull themselves together after being cut in half. They are also excellent Twister players, due to their spine-less nature.