Fleet Admiral Frewn Pensh commanded the Imperial Navy's Second Fleet.
Among the ships under his command was the ICS Hammer, captained by his long-time friend and comrade Aker Santani.
Pensh commanded the Second Fleet from the ICS Stiletto, a Raptor-class carrier to which the CAGA 951st Battalion was posted.
Pensh was a firm but fair commander, mellowed by the years while still retaining a keen edge from the harsh military lessons of the Perseus conflict.
In March 3745 ELC, under Pensh's orders, Hammer, Sai, and Dagger assisted Elm Caden in his investigation into the attack on Gemen Station and the discovery of Amarist Naeb. Pensh also loaned Bullseye Company to Captain Santani. This infantry unit, led by Captain Pinsetti, remained on loan up to and including the Battle of Woe Tantalum. During that engagement the company supported Elm Caden in his investigations, at the cost of Captain Pinsetti and the entire Third Platoon (→SFTD).
Pensh and the remainder of the Second Fleet rendezvoused with a number of other Imperial fleets at Fort Laeara, a military facility on the Perseus arm of the galaxy, to be briefed in relation to Operation Seawall (→SFTD).
Admiral Pensh led a task force into conflict on the Perseus arm as part of Operation Seawall. As of 20th March 3745, the Stiletto was reported to have been destroyed in combat, and Pensh is now considered KIA (→LOTD).