The Emperor

The Emperor, also known as Darth Sidious, is a Sith Lord who is affiliated with the Locusts. He is one of the leading Locust Generals and is one of the most highly respected members of the Locusts. He has participated in several battles with the locusts.

Biography
Not much is known about the Emperor's life, other than he joined the Locusts in late 2015 and he trained Count Dooku previous to him joining the locusts.