As cliche as the trope is, a demon that is essentially the Lone Warlock but stronger is a perfect foil for him.
Characters like that can take the qualities of a hero and flip em on their head. And besides, the idea that the only thing that can kill the Lone Warlock is himself is metal as heck.

Design-wise, make the colors of said demon on the opposite end of the color spectrum to reinforce the idea of polar opposites. And horns. Think Marauder from Doom Eternal mixed with V2 from Ultrakill. Maybe a final form where he turns into a hellish monstrosity of flesh and metal too.

Uses Super Shotgun and is voiced by the creator but backwards (because why break tradition).

A demon that shines a blinding light, brighter than the sun, made of something akin to mirrored glass capable of reflecting magic but having no magic of its own apart from flight and shifting its form. It might initially take the form of something familiar in nature, an amalgamation of humanoid, animal, and or insect, but unnatural in its composition being made of sharp abstract shapes.

Each fragmented shard separated from its main form becomes its own separate entity, weaker in its ability to reflect magic, whirling and dancing, slicing and dicing until the whole beast becomes something of a tornado of jagged glass and dazzling light.

The Hydra Demon. Its features are humanoid, with a body covered in scales unscratchable by normal bullets and a reptiloid face capable of spitting acid or fireballs. If it comes within reach, it can easily dismember its victims with its claws or with a blow from its mighty tail bristling with spikes. As the name implies, hitting it in the head only causes another one to pop out, so the only option is to blow it to smithereens with a large explosion, or to be able to set it on fire after removing its fireproof scales, which requires a great deal of anti-tank ammunition.

The Lone Warlock would have its hands full with such an unstoppable enemy.

Tremble, warlock, before the awesome power of Machismodeus!

He is the demon lord of sheer absolute machismo. Machismodeus entered this mortal plane by tricking a mortal bodybuilder who wanted to become as buff as possible, and possessed him instead. This demon lord may be pixelated, but every pixel is a muscle!

Machismodeus has three attack modes. His basic attack is "Great balls of fire!" where he spews fireballs that, if they do not hit, will leave an oily field on the ground that will light up into into walls of fire when hit repeatedly. His first special attack is "Magnetic personality" where the warlock is dragged towards the demon lord by sheer force of his will, colliding with any walls of fire in the path and exposing the warlock to direct attacks. His second special attack is "Feel the rhythm!" where he thumps his chest so hard that the sonic shockwave causes any nearby walls to move and strike the warlock.

His ultimate threat arises from the fact that as a lord of machismo he is powered by all things badass and draws power from badassery around him. Anytime the warlock says a cool catchprase like "Let's rock and roll" or "Groovy", it will actually heal and power up Machismodeus. The very attitude that defines the Lone Warlock may thus be his own undoing!

Can the Lone Warlock defeat Machismodeus, mano a mano, machismo a machismo? Tune in for the ultimate showdown!

Congratulations to the winners!

Congratulations to all the winners!
Enjoy all the games and goodies!