Miguel Sandfire aka Captain Sandfire is a space pirate and captain of the Excelsior ship.
Miguel was born on Earth, he never knew his father and one day when he was not home his house was burned down. His mother, badly burned, was taken to the hospital. He was then abducted by Skrull slavers who took him to a mining planet called Kaloris. Later, he allied himself with other slaves and organized a rebellion to flee the planet. They managed to escape but Miguel lost an eye and a leg. The former slaves became the Believers, space pirates, to fight the injustices in the galaxy.
He will later learn that he is the son of the legendary Kree warrior Kree Mar-Vell, also known as Captain Marvel.
For his adventures in detail, click here.