Grubber

Grubber was one of the Storm King's underlings.

History
When the Storm Creatures invaded Canterlot, Grubber was the first to descend from an airship, bearing with him a microphone that he used to introduce Tempest Shadow. On her orders, he later led several Storm Creatures in an attempt to capture the Mane Six-or more specifically, -only for them to escape due to a collapsing bridge. He subsequently reported his failure to the commander, and was zapped for his failure. She then instructed Grubber to ready her airship to pursue the escaped ponies.

Grubber accompanied Tempest as she followed the ponies to Klugetown, where he watched as she beat up one of the locals. They soon located the ponies at Capper's home, only for them to escape; Tempest and Grubber promptly brought the cat lord along to help them track down the fugitives. Grubber was the first to spot 's ill-timed sonic rainboom, and later boarded the Prism Wing with Tempest and her guards. He watched the confrontation between Tempest and Captain Celaeno's crew, and then discovered a cupcake left behind by when the ponies escaped yet again.

Eventually, Twilight Sparkle was captured, and Grubber returned to Canterlot with his superior. When the Storm King appeared, Grubber was quick to assure him of Tempest's loyalty, though he soon absented himself from the throne room of Canterlot Castle. He later spotted a cake being brought into the city and sampled it, only to discover Celaeno's crew hiding inside. He was later seen celebrating the downfall of the Storm King and the apparent peace between his former subjects and enemies.

IDW comics

 * See 

Books
In The Stormy Road to Canterlot, Grubber attempts to recover the Misfortune Malachite for the Storm King, only for Tempest to steal it and escape. He later encounters her in Bleak Valley, and surprises her by finding her uncontrollable magic impressive, rather than terrifying. Grubber and Tempest are later sent to infiltrate Mount Aris and steal the Pearl of Transformation, but are caught and fail in their mission. In the novelization of My Little Pony: The Movie, Grubber's role is largely identical to that played in the film, though it is noted that he and have become acquainted during the final celebration.

Grubber is also mentioned by Tempest, who somewhat misses his company, in Beyond Equestria: Fluttershy Balances the Scales. The storybook The Great Princess Caper depicts Grubber as a lowly member of the Storm Army who longs to be seen as fearsome and intimidating, but fails due to his small size. Overawed by Tempest, he tries to win her over but manages mainly to annoy her with his antics. Once the Storm King is defeated, however, a repentant Tempest approaches him and convinces him that he always failed at being bad because he was meant to be good. Having finally found a place-and a friend in Tempest-Grubber joins her in setting off for parts unknown.