Liam Pyun was a Solarian citizen and an officer of the Solarian League Navy's Frontier Fleet.

Holding the rank of Rear Admiral, he served as commanding officer for Battlecruiser Division 3065.2. In 1922 PD, he took his forces to the Zunker System to secure the local wormhole terminus. However, the Royal Manticoran Navy had already taken control of it and forced Pyun to retreat into hyperspace by launching a full volley of warning shots into his ships' sidewalls. (HH13)

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