Mason Quarrell was born on the Mid Rim planet Sicemon in 72 BBY. He was taken for Jedi training in 67 BBY after his father, the Emperor of the Sicemonite sector, allowed them to take him. When he turned ten standard years old he was selected to be the apprentice of the Jedi Grand Master Yoder Gree. He quickly rose through the ranks at record pace and became a legend in the Jedi Order and throughout the galaxy by 23 BBY. He fought in the Great Galactic War.