Trork Sentries can be seen using a large spear in one hand. They appear to have minimal armour. From their name we can assume they will be guarding trork outposts. Trork Sentries can be easily distracted by passing birds and will even throw spears at them.
The Trork Sentry is part of the Trorks family. The Trorks are a savage race of Monsters that can primarily be found in the Emerald Grove. They come in many shapes and sizes and bring many different weapons to their arsenal. You'll want to take note of which class you're facing when you go into combat against this faction.