The Stalker

In-Game Behavior
The Stalker will target a random player, then find a position where it's as far as possible from it's target, while still having them in it's sight. If The Stalker's target stays in it's sight long enough, it'll suddenly charge towards them at tremendous speeds. The Stalker will specifically only chase it's target, but will still attack anyone in the way. As soon as The Stalker gets close to a victim, it'll quickly slash them with it's sharp claws that can instantly kill you. When The Stalker kills it's target, it'll move onto somebody else to stalk. If The Stalker doesn't end up killing their target in a certain time period, then it'll stop moving. It'll stop moving and emit dark smoke, the smoke in which pulls you in closer to The Stalker if you get too close.