The Deadite just before throwing a facility worker off the railing.
Deadite from Army of Darkness (1992)
Deadites are one of the monsters seen on the whiteboard. They were bet on by the Story Department. A possible Deadite is seen grabbing a worker and throwing him over the railing to the Giant Snake during the Purge.
Physical Description & Attritbutes
In their source, Evil Dead, people who have become possessed by a demonic or evil spirit, transforming them into an undead monstrosity. The anatomy of a possessed person alters slightly after becoming possessed, with teeth growing sharper and eyes turning pale and skin decaying slightly. The longer someone remains possessed by a demonic spirit, the more hideous the people turn in appearance. It is never revealed as to whether Deadites function this way in this movie as well.
A necronomicon summons them.
Inspiration
They are a direct reference to the Deadites of the Evil Dead series.