Has a number of very highly-damaging attacks, high health, and also summons Lost Souls.

A simple monster that flies up to the target and melees. Doesn't do much damage and doesn't have much health.

A zombie with a Plasma Beam. Hard to avoid in open areas and does a lot of damage if sustained. Kill it quickly or take cover to avoid being forced down.

A quick note, its attack doesn't display properly in Skulltag. Best used in (G)ZDoom.

A stronger Baron of Hell variant. Throws three stronger fireballs in quick succession, and has a bit more health, as well.

This deformed pinky demon has adapted to living in areas of complete darkness. Unlike its cousin it has no eyes or horns. While this may seem like it would make for a less threatening creature, that's far from the truth. With lack of vision it has extremely good hearing and will use its superior speed to quickly attack its prey before they can escape. Additionally, it has sharper teeth which gives more ripping power. They wander around aimlessly but as long as you stay quite you should be safe... shh.

A stronger version of Doom's Demon. It has more health, does more damage and has double the health. Fits better in tech base style environments than in hellish landscapes.

A dedicated mini-boss with high health and several attacks. It fires fiery projectiles, breathes a stream of fire, and summons ghosts to fight for it. Also, it can inflict the player with a curse which makes him take double the damage.