Markov is Prince of Markovia and the half - brother of Terra .
Geo - Force ( Brion Markov ) is a fictional superhero character appearing in comic books published by DC Comics .
Brion Markov is Brion Markov of Markovia and the half - brother of Terra .
Geo - Force ( Brion Markov ) is a fictional superhero character appearing in comic books published by DC Comics .