The Mutant Jellyfish is a jellyfish kaiju created by TriStar Pictures that first appeared in the Godzilla: The Series episode Future Shock.
The Mutant Jellyfish fought with Godzilla shortly before H.E.A.T. disappeared into the future. The Mutant Jellyfish awaited their return, and was quickly killed by Godzilla when he attacked them.
- Regular Abilities: Very weak acid globs from the mouth
- Special Abilities: Fast swimming
Mutant Jellyfish concept art
- Oddly enough, the Mutant Jellyfish looks nothing like a Jellyfish.