Petroleus Rex

Petroleus Rex (real name Rex Bernstein) is an enemy of and a member of The Fossil Fuel Four.

History
Before becoming a supervillain, he was environmental scientist Rex Bernstein. He was attacking the Zenith City nuclear power plant with the rest of the Fossil Fuel Four. Together, The Fossil Fuel Four defeated and killed Radioactive Man.

Powers
He can shoot gas from the pumps on his arms.

Behind the Laughter
His name is a reference to and a.