Captain Karl was an Osean Ground Defense Force soldier.
On October 1, 2019, Karl was tasked with escorting Erusean Army general Édouard Labarthe around Anchorhead Bay. With the support of Strider Squadron, he reached the extraction point with the general and boarded the rescue helicopter.
As they left the airspace, AWACS Argus ordered all Osean forces in the area to eliminate the general, claiming that Karl was an impostor. An Osean fighter later shot down the transport, killing Karl and everyone else aboard.