Maggot

The maggot is a new enemy found in Doom 3. Maggots have two heads and two long black tongues, one for each head. Their back is hunched and consists of two large, tumor-like bloody stumps with retracting barbed bones protruding from them. The maggot alternates between approaching on all "fives" (since they have five limbs) and walking upright on its back legs. The latter is commonly used when the monster is close to the player. It may be interesting to note that each hand has a different shape: one is nothing more than a flat stump, one is a pinching claw, and one is a simple human-like hand. Maggots are possibly a cross breed between an imp and a wraith, since they can perform a leap attack and hunches. However, maggots only have melee attacks and do not have falx-like arms like the wraith.

Maggots make their debut in Alpha Labs Sector 1, where the player encounters a scientist who was pulled up to the ceiling and had his body split open by a maggot. In Doom 3: Resurrection of Evil, they only appear on one stage, the toxic sewers.

Tactical analysis
Only able to attack in melee, maggots either rush up to the player to rend at them with their claws or perform a long-range leap which is nearly impossible to dodge.

Despite their size and mobility, they are not known to leap as much as imps do, and they are even weaker than the imps, even though when standing next to each other, the maggot is much larger. A single shotgun blast or a short burst from the machine gun or plasma gun can easily kill a maggot. Maggots have a tendency to run up to the player on their back legs and then quickly crouch back down, so that the player can easily miss the first shotgun blast. A good strategy is to simply aim a little lower when they charge. Another good strategy is to use the machine gun or even the pistol to kill them, since they have very low hit points. It is also a good idea later in the game to use the chainsaw on them, considering that they are melee-only enemies.