Wiki is currently undergoing a revamp! If you see some pages that are more polished, it means they've been revamped.

Stalker

Stalkers are a possible evolution of Infected Pillagers, belonging in the Evolved tier. They are fast and dangerous mobs.

Spawning

Spawned when an Infected Pillager gets an evolution point by killing a mob and its evolution timer begins. If the evolution succeeds, they have a 30% chance to become a Stalker.
Spawned from Arena Tendrils during the third wave of a raid.
Spawned from Vigils during the third wave of a Vigil raid.
Spawned from a Howitzer's large Flesh Bomb.

Hyper Evolution

When reaching 7 kills and waiting for the 5-minute evolution timer to finish, the Stalker will evolve into a Wendigo.

Unique Behavior

Stalkers use biological camouflage to blend in with their environment. Depending on the grass color of the biome will depend on the color of foliage they use to disguise themselves (this accounts for modded biomes.) They'll update their camouflage every minute.
Stalkers often leap at their targets when in close range. They can utilize this to leap across small gaps to reach targets.
The Stalker has very high knockback, having 10x the knockback of a basic infected, with a value of 3 for knockback.
Is able to climb up blocks.

Behavior

Stalkers are melee combatants, attacking mobs with Infected forms, golems, and most hostile mobs.
Stalkers inflict Mycelium Infection for 30 seconds when dealing melee damage.
Has a follow range of 32 blocks.
Stalkers have a 5% chance to drop a Scent upon death.
When killed, have a chance to place a small short-lived Mycelium Infection area effect cloud.
Stalkers will attempt to group together in hordes with other Evolved.
Infected will follow Stalkers, who themselves will follow Hyper Evolved and Calamities.
Can perform low leaps/dashes to chase prey quickly through water.
Able to use kill points to give themselves buffs, such as strength or speed if the target is running away. They can also give themselves regeneration if they are low on health.
Capable of breaking glass and leaves.
Have a damage cap of 1/3 of their health on hard mode.
Present a weakness to the cold, like all spore mobs.