Pinkymod/Archdemon

Not to be confused with the old console exclusive enemy the Arch Demon 

The Archdemon is a Pre-Hardmode Miniboss fought in the Underworld.

Summoning
The Archdemon can spawn randomly in the Underworld at any point in the game making it very risky for players to enter the Underworld early.

Behaviour
The Archdemon flies towards the player while rapidly firing demon scythes at them that move much faster than those or normal demons followed a burst of shadowflames fireballs that explode after a short time.

At 50% the Archdemon summons two Fire Imps on either side of itself to attack the player.

Bestiary Entry
Demon that is above the rest on the Underworld Hierarchy. Their advanced magicks are passed down to them from generations of Archdemons. It must at some point, came from the Old Demon Monarchs themselves to their subordinates. The age of old has always interested me, too bad I have never lived to experience it.

Also, if the Underwoord has a hierarchy, it means there's bureaucracy too. This further supports my theory that bureaucracy really does originate from Hell.