Early Life
Born from the Clan eugenics program in 3006, Karl won notice for his skills as a Mechwarrior when he defeated the three opponents arrayed against him in his Trial of Position to test out of his sibko. While he was initially assigned to lesser known clusters, he quickly advanced through the touman to achieve a position within the Ghost Bear's prestigious Alpha Galaxy.
 Clan Invasion
During Clan Wolf's Trial of Refusal against the impending Operation Revival, the commanding Khan and saKhan of Clan Ghost Bear were killed. The warriors of the Ghost Bears quickly selected Karl Bourjon as a their new Khan. His first challenge was to participate in the preparations for the upcoming invasion of the Inner Sphere. Though he was skilled enough to earn the Ghost Bears the second most desired attack corridor, he did not grasp the need for the logistical preparation of the invasion. Thus, Clan Ghost Bear brought little in the way of supplies with them into the Inner Sphere.
The lack of supplies would quickly cause problems for the Ghost Bears and specifically Khan Karl Bourjon. After previously conquered worlds overthrew the small garrisons left by the Ghost Bears, their invasion plans quickly fell behind their initial estimates. Not long after, the Clan experienced the loss of an entire Cluster due to an accident over Damian and then the death of the saKhan Theresa DelVillar. This left the entire Clan demoralized and unsure of their next steps.
At the gathering to elect a new saKhan, the Ghost Bears would select Aletha Kabrinski for the position. She quickly lived up to her aggressive nature and called for the dismissal of Karl Bourjon as Khan for his failure to plan adequately for the invasion. A call that many fellow warriors agreed with. While Karl did call for a Trial of Refusal against losing his position, he displayed little skill (perhaps due to recognizing his own failures in the invasion preparation) and was defeated by Bjorn Jorgensson who would become the new Khan.
Faced with returning to the homeworlds or staying with the invasion forces, Karl took a lesser rank to stay at the forefront of the fighting. He was assigned to the 7th Bear Guards (Clan Ghost Bear) which was assigned to various worlds within the Ghost Bear occupation zone, but saw no fighting until the Battle of Tukayyid.
As part of the 7th Bear Guards, Karl would participate in Beta Galaxy's advance on the city of Luk as part of the Battle of Tukayyid. When the unit were ordered to support the advance into Spanac, the Twelfth Division of the Com Guards caught the Guards in an ambush by setting the Holth Forest on fire. This nullified the technological advantage of the Clan mechs and drove them into prepared areas where the Com Guards destroyed the 7th Bear Guards. Karl Bourjon showed his previous mastery as a mechwarrior as he became the last man to fall in the fighting.
- ↑ Era Report: 3052, p. 87, "Karl Bourjon profile"
- ↑ Era Report: 3052, p. 88, "Aletha Kabrinski profile"