Grub is General Bu's subordinate. His voice actor is David Francis.
Grub is a giant anthropomorphized slug that serves General Bu. He has green skin, a white stomach and eyes popping out of his face. He walks half-naked, wearing only armor that covers only his back.
- Prehensile Tail: Grub can grab things with the claws on his tail.
- Telephonic Goop Bubble: Grub can spit a gooey bubble capable of make a direct call to General Bu.