Blumfump is a Mer alien living on a Frozen Planet who recruited Lance's help to save his underwater home from brainwashing. He, Plaxum and Swirn kidnapped Lance from Queen Luxia and convinced him that their society was being brainwashed. Later, Lance and Hunk discovered that it was in fact a giant, plant-like worm monster hiding in the Baku garden that was behind the mind control. Once the Paladins defeated the monster, Queen Luxia asked Blumpfump, Plaxum, and Swirn to be become her advisors.
- Blumfump always wears a jellyfish on his head, so his face is never revealed.
- Bumfump is voiced by Weird Al Yankovic.