Mr. E

Mr. E is a General of the Sons of Garmadon. He is set to debut in Season 8. Little is known of Mr. E; he wears a black biker outfit, red gloves, and a black helmet with a red visor. His eyes appear to be glowing red, though it's possible this is an illusion. He is very mysterious and he never speaks. He also has the letter "E" on a badge on his chest.

The Mask of Deception
Mr. E led some of the Sons of Garmadon to the Borg Tower in order to steal the Mask of Vengeance. His attempt was succesful, however a member of the S.O.G. activated the alarm and Lloyd came to stop them. Mr. E had to sacrifice one member and leave him get arrested by the police to escape. He then returned to his bike, but Lloyd kept chasing him with his car. He found a way to jump over him and land into a boat which he used to leave.