Stimulo

The Stimulo is a hostile melee mob from the Shyrelands.

Spawning
Stimulos can spawn naturally below y = 35 in the Shyrelands.

They will despawn if the player gets too far away from them, or if the difficulty is set to Peaceful.

Behavior
Stimulos are melee mobs that will follow targets both on land and in water. They will initially attempt to avoid getting into the water where possible, but will go in if they find no other path to their target.

They are aggressive, and will attack nearby players within 16 blocks without provocation. If attacked by another entity, they will retaliate and continue targeting that entity.

Staying outside of their targeting range will prevent them from attacking or targeting entities.

Unique Abilities
Depending on how much health it has left, a Stimulo has a constant Speed effect. A Stimulo has no effect above 75% health, Speed III between 75%-50% health, Speed II between 50%-25% health, and Speed I between 25%-0% health.