M. Krisalliom was born on a Space Station nearing the outer rim of "Sol" system just outside the gravity well of Pluto. He spent much of his life there with his Enlisted parents. His Mother, Trinity Harrison (Maiden) and Father James Krisalliom, were both Spacers who had lived much of their lives on or aboard starships and stations before both joining the UGTO Navy. Much of young Krim's life and adolescent records were lost with the destruction of the station after a ICC terrorist attack destroyed one of the station's fusion generators and in a cascade system failure wiped the computer core and made the station uninhabitable. It was during this attack and subsequent evacuation from the station that Krim developed his uncanny survival instincts and deep connection to his fellow human beings. Many stories have been told of a young man who helped people to evacuation shuttles and assisted in putting out zero-g fires all while putting himself in harms way. It was unknown if this young man was in fact Mark James Krisalliom or "Krim" as he is known in the Galactic Navy but many believe that it must have been him. Many say leaders such as Fleet Admiral Krim are born under these conditions that these experiences make them stronger. Perhaps the adage rings true "That which doesn't kill you, makes you stronger"

Krim joined GTN about a year after it's initial founding and has been with it ever since. His first posting was aboard a Harrier class frigate of which he was a plankowner, or an original officer of the ship's first voyage. From there he reported aboard several vessels learning from many officers both above and below him in experience. He survived numerous battles both in space and on with infantry landing parties. Nothing gives a man nerves of steel quite like dodging planetary point defense lasers only to land and engage heavy armor and other soldiers in hand to hand combat. His fifth and sixth postings brought him combat with the K'luth and several promotions, some of them field level including his posting to Captain when a K'luth cruiser attacked his  Cruiser doing picket duty along the border and killed his CO. During an edge of known space assignment he was approached by the entity known as "The Continuum" it is unknown who conversed with Krim or about what subject matter but after a lengthy discussion over private comms he was reported to have sworn a second oath of allegiance but this one not to the Galactic Navy. This event brought very close scrutiny of his service jacket for many months to come however after a very long and extremly successful tenure as the CO of a Carrier Dreadnought GTN Command promoted him to his current position of Fleet Admiral and granted him the newest Elite Assault Dreadnought as his flagship.

Currently Krim is the Fleet Admiral of a Renewed Galactic Navy. He has lead the fleet through several changes and has brought blood both new and old back into the fleet to bring it back to a glory it once held.