Ruehn, a captain within the ranks of the Alanciari military, held a post at the fort situated in Garrow's Neck. An incident resulted in the loss of one of his eyes, leaving only a single functional eye. During Quarra Thayn's journey towards Point Defiance for a visit with Jogan Halder, Ruehn intercepted her and requested to see her official papers. Upon being presented with her transit authorization and official warrant, he experienced surprise, as he had been unaware of her status as a wardmaster.