|Images of stalker automatons|
Source: Construct Handbook, pg(s). 30–31
While made of metal, a stalker's automaton core can use illusion and transmutation magics to transform not only its coloration but also its texture. For instance, a stalker can form illusory plant growth to better blend in to a natural environment. Most are five feet long and weigh 300 pounds, but particularly old stalkers remember bear- and drake-sized models.
The Artificer Conclave built upon the predatory strengths of large cats to further perfect their ability to stalk and kill prey. These gifts attracted the Jistka Imperium's greatest hunters to take on its form. While initially deployed against the Imperium's foes, the hunters within grew bored and began stalking prey across the Inner Sea region, then the Material Plane, and eventually into the Great Beyond.
In addition to its adaptive camouflage, stalkers can phase across planar boundaries to traverse Material Plane distances seemingly instantaneously, though this falls short of true planar travel. While formidable, they are especially patient and tactically adept, willing to retreat when overwhelmed and sometimes satisfied with simply going unnoticed in the presence of especially powerful quarry.
Stalkers tend to hunt alone, but occasionally join with others to hunt as a pack of up to six close-knit members. Packs name themselves after their greatest successes, such as Titan Slayers. These groups lack a hierarchy and are guided only by the next hunt, regardless of which member locates it.