Sentry droid (First Order)

The First Order's Starkiller Base superweapon was patrolled by many units of a squat, white plated model of sentry droid around thirty years after the Battle of Endor. These droids possessed a square head with several antennae protruding from the top, which sat on a body with four short legs ending in rolling casters that allowed the sentries to move easily through the base interiors.

Behind the scenes
The First Order's sentry droids first appeared in the film Star Wars: Episode VII The Force Awakens, which was released in 2015. They were not named in the film, but were identified as sentry droids in the reference book Star Wars: The Force Awakens: The Visual Dictionary, which was written by Pablo Hidalgo and released in conjunction with the film.

Appearances

 * Star Wars: The Force Awakens: The Visual Dictionary