Like the Four Heavenly Kings, the Underground Heavenly Kings have Gourmet Cells implanted in their bodies and posses superhuman abilities. Most of their abilities are also similar to the abilities of the Kings, but they can also use them to counter against the Kings' abilities.
Rex - Superhuman Strength; Appetite Energy Projection; Generating Flames.
Dimeto - Hazardous Chemical Generation; Producing flammable or acidic chemical reactions.
The members of the Underground Heavenly Kings have a dinosaur theme in either their appearance or combat style, and each of their names is based on a species of dinosaur, with the exception of Dimeto who is named after the prehistoric Dimetrodon, which is often confused for a dinosaur.