- "Fossil Fuel Four" redirects here. For the character collection in The Simpsons: Tapped Out, see The Simpsons: Tapped Out characters/Fossil Fuel Four.
The Fossil Fuel Four is a supervillain group consisting of The Fracker, Charcoal Briquette, Petroleus Rex, and Old King Coal.
They were attacking the Zenith City nuclear power plant. Together, they defeated and killed Radioactive Man.
- The name is based on the Frightful Four in the Marvel comics. Their theme is based on fossil fuels.