|SAS: Zombie Assault 4 Zombie Type|
|- Stalker -|
|First Appearance:||Rank 1, 5, 20, 40|
|Zombie Type:||Primary Zombie|
|Base HP:||210, 420, 840, 2000|
|Melee Damage:||63, 126, 252, 600|
|Melee Delay:||0.9 Sec|
|Melee Range:||1.2 m|
|Movement Speed:||2.6, 2.7, 2.8, 2.9m/s|
|XP Value:||7, 14, 28, 56|
The Stalker is a zombie introduced in SAS: Zombie Assault 4. It is faster and stronger than a Shambler, but not a special zombie or boss by any means. Like other regular zombies, it has four versions, Normal, Fetid, Evolved, and Apex, with each higher evolution gaining more and more buffs (as do all the other normal zombies in the game). The Apex Stalker in particular has a relatively large pool of health for the level it appears in, and can be very dangerous with many combinations.
- It looks more muscular for every evolution, as "the virus has caused extra muscle tissue growth". Also, it looks lose skin for every evolution, as is Shambler.