Friedrich Roken is a Katzian male who holds the rank of Admiral, his specific species is the tiger. During the years leading up to the Araxium War, he held the rank of Captain and was given command of an ATAGO Class Stealth Heavy Cruiser, the AIN TAKAO.
During the war he participated in the first naval battle that broke out, it was his ship that made first contact with the enemy. After some battles he was assigned command of a small squadron of ships to conduct raiding operations behind enemy lines. For his success of sinking twelve battleships, eighteen cruisers, six destroyers and two carriers he was awarded the rank of Junior Admiral and commanded a the flagship of Kampfgruppe Adler after the Admiral of the fleet, Romuald Bauer was killed on his ship. In the action he distinguished himself as a capable commander, managing to land troop reinforcements and manage a space battle at the same time. During the battle he was promoted to the rank of Admiral by the authority of Arabel Ignatius Axonn, after he indirectly saved her life during the ground war that was later known as the Battle for Axonn.
In the post war, he continued to serve as the commander for Kampfgruppe Adler. His ship after the war was the AIN ARABEL, which remained under his command until his death when the GAE expanded into the Ancerious Galaxy. He was killed during The Thramas Incident by the unnamed forces when a purple lance cut into the bridge, through an inactive reactor and out the other side, killing all on the bridge and temporarily disabling the warship.
After his death he was promoted one more time to the rank of Grand Admiral. However due to the destruction of the bridge his body could not be found, the only item as proof of his existence was his shoulder rank badge.