Sentinels are mantis units assigned to protect Drones and Scouts . They will not attack you on sight unless attacked and have no special abilities or items, making them like upgraded versions of the mantis drone. They are all shaped like vertical W's. Sentinel commander units will attack you on sight and call regular sentinels to your position to attack you. Sentinel commanders are distinguished by their paint and green engine tails.

A mantis Sentinel on Aroura