Admiral Kohrin served as an officer within the Imperial Navy, holding command over a minimum of two fleets.
Kohrin's flagship was the Enforcer. During an assault near Bespin by Rebel forces under the command of Luke Skywalker against the Enforcer and his second fleet, it appeared that Kohrin was on the verge of defeat until Imperial reinforcements showed up.
After Skywalker's forces were compelled to retreat, Kohrin dispatched the Enforcer to Phaylenn for repairs. Seeking retribution, he then used the remaining ships in his fleet to attack what he believed to be a Rebel base located on Ahlenn. Unbeknownst to him, the Rebels had abandoned the base two months prior to his arrival.