Imp Overlord

The Imp Overlord is a Boss Monster in Risk of Rain 2, and was in the original game. Being a Boss, the Imp Overlord may be encountered after initiating a stage's Teleporter Event. It can otherwise spawn naturally during higher difficulties.

Environments

 * Rallypoint Delta
 * Scorched Acres
 * Abyssal Depths

Decimate
Strictly a melee attack, the Imp Overlord will violently lash out in close proximity to itself, dealing an immense 5*200% damage to those caught in the radius. It will only perform this move when there is a target in melee range.

The skill has a cooldown of 1s and a Proc Coefficient of 1.0 per hit.

Spike Volley
The Overlord swipes and flings 5 to 6 spikes in the direction of its target in a horizontal cone pattern. Each individual spike deal a decent 30% damage and causes for 3 ticks. Spikes that don't make contact with a target plant themselves in the ground. Same amount of damage will be inflicted to those who make contact with planted spikes.

The skill has a cooldown of 3s and can stack 3 times. Each spike has a Proc Coefficient of 0.8.

Abyssal Teleport
Imp Overlords will periodically disappear and re-materialize in a different location. Before it teleports back, a large red circle will be present on the ground, as well as some floating particles, to telegraph where it will re-appear next. Those standing within the ring as the Imp Overlord teleports back will be dealt considerable damage.

The skill has a cooldown of 9 seconds. This attack is not to be confused with the Overlord's death animation, in which a portal emerges and the boss is unwillingly pulled back to its original dimension.

Loot
Main Article: Shatterspleen

If the Imp Overlord is the Teleporter Boss, there's a chance the Uncommon item you would get as a reward for defeating the Teleporter Boss could be replaced by its Boss item,.

Tips

 * Given the boss' high movement speed and ability to teleport, keeping your distance from an Imp Overlord can prove difficult. Regardless, it's best to always be on the move. While the Overlord's Spike Volley can be a nuisance, the alternative - its melee attack - is much more dangerous.
 * While kiting an Imp Overlord, it's best to avoid retracing your steps too often. The area will eventually become littered with planted spikes and you're liable to accidentally walk backwards into them as you fire at the Overlord. To that end, those with items that enhance vertical mobility, such as or, have an easier time dealing with the boss' Spike Volley, given its horizontal nature and the player's ability to stay off the ground and avoid planted spikes.
 * While meleeing the Imp Overlord can be perilous due to its Decimate attack, a survivor can attempt to hug the uppermost part of the boss to avoid being hit by the ground slams.

Trivia

 * In the first game, the Imp Overlord was a community made boss suggested on the Risk of Rain forums by Seria-Myouna and illustrated by Daimera.