Grandparent

The Grandparent is a new Boss Monster introduced in the anniversary update of Risk of Rain 2. Being a Boss, the Grandparent may be encountered after initiating a stage's Teleporter Event. It can otherwise spawn naturally during higher difficulties.

Environments

 * Sky Meadow

Loot
Main Article: Planula

If the Grandparent 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,.

Rock Throw
The Grandparent throws a large rock at a player, causing heavy damage and heavy knockback on impact. The rock will be destroyed if it comes into contact with any solid obstacle.

Black Hole
The Grandparent spawns a slow-moving orb that moves toward a player for a moderate duration. Any player caught in its gravity well will be pulled toward the orb. This orb (and its gravity well) can pass through all obstacles. Players should avoid being caught by these orbs in certain levels as they can result in being dropped into bottomless pits.

Supernova
At 50% health and below, after a brief delay the Grandparent creates a large sphere resembling a star above its head. Any entity (both players and enemies) caught in its large AoE that do not have direct cover between them and the star receive stacking damage debuffs (superheat?) that quickly drain health. For this reason, it is generally best to focus attacks on one Grandparent at a time.