Atlas Olibarri is an A-Ranked Adventurer working in Sparta, Imperium. He is well-known for being incredibly strong, with enough force behind his nasodic fists to punch through solid steel.
He is Caius Maximus's adoptive son, and was raised by him following the death of his father during the Great Gap War. He and Solitude Maximus are as close as brothers, despite them not knowing each other much during their childhood. It wasn't until the age of thirteen that Atlas moved into the Maximus Estate, back when Solitude was only eight years old. After age fifteen, Atlas moved again to live at the Hall of Justice with Homerus Aristophanes.
Often considered to be a prodigy, Atlas reached A-Rank in a matter of two years. It is well known that Atlas has fought a young dragon to a draw all by his lonesome, although the true nature of the dragon he fought, as well as its coloration, was never determined.