The Sentinel forces watch over planets and protect them from damage. They are robots that go around, and monitor wildlife. They are alerted by environmental damage, and attack if they see damage. They require obedience.

This is a Sentinel Hardframe. Only one can be deployed per Wave. They have a humanoid structure, and attack with explosives and a rapid-fire machine gun. They can walk and leap around. They have limited sentience.

They can only say “THREAT DETECTED” and “SEARCHING”.