Solus Control Unit

The Solus Control Unit is a new Boss Monster introduced in Risk of Rain 2. Being a Boss, the Solus Control Unit may be encountered after initiating a stage's Teleporter Event. It can otherwise spawn naturally during higher difficulties. It is exclusively found on Siren's Call.

Solus Charge Shot
A charge shot where it fires six light blue orbs at the player in either a horizontal or vertical line, that then explode in a small area upon colliding with an entity or surface.

Each shot has a Proc Coefficient of 0.02.

Solus Probe Launch
It's second ability is to summon 3 Solus Probes, of which it does so at random intervals.

Charged Plasma Detonation
After dropping below 50-65% of its maximum health, the Solus Control Unit will then begin to periodically do an attack where a large blue circle will appear on the ground around a random opponent. This circle after a delay of approximately 5 seconds will explode, dealing massive damage in a very large area to any players left inside, as well as launching them into the air. Note that players are slowed when caught in the circle, making it more difficult to escape their explosion radius.

The explosion has a Proc Coefficient of 1.0.