Brion Markov was part of the royal family ruling over the country of Markovia. After his father, King Viktor, was killed, Brion was given superpowers to fight against those attacking his country. During this battle, Brion was discovered by Batman. Brion later joined the Outsiders where Batman trained him to become a true superhero. Over the years, Geo-Force would join various incarnations of the Outsiders and briefly was on the Justice League roster. Brion is the half-brother to Terra, who in turn is most famous for her role in the classic "Judas Contract" storyline in "Teen Titans."
Geo-Force is a master of many forms of geokinesis and Earth manipulation. If he suffers injuries in battle, Brion can envelope himself in lava and soil to heal his wounds. In addition to controlling lava, dirt and stone, he is also able to control the Earth’s gravitational field. Geo-Force can create force fields, make objects more dense, and even fly because of his control over gravity. His use of gravity even gives him super strength and durability.
