Grubber is a humorous pug-faced hedgehog, a former servant to the Storm King, and Tempest Shadow's companion. He, along with Tempest Shadow, assisted the Storm King in invading all of Equestria and capturing Twilight Sparkle and other Princesses in order to utilize their magic to make Storm King stronger. Grubber is a hedgehog with a black grayish color with white stripe hair. He is dressed in a black vest with an emblem representing The Storm King's kingdom.

Now a companion of Tempest Shadow, he frequently joins her on her excursions to atone for both of their sins and to help repair the devastation the Storm King has brought to the other lands. He was observed munching a spongecake.

Mmm! Oh, dude! This is good stuff! Very good! I adore cake! The wisecracking hedgehog exclaimed with a big smile as he ate the wonderful delicious cake.