Murdock (translated Mardoc in the Japanese version) is the military commander of Bern, leader of the Three Dragon Generals, and second only to Zephiel in the Army of Bern, a notable feat considering he came from a peasant family. When King Desmond poisoned Zephiel, Murdock was the one who nursed him back to health. He is Zephiel's most trusted subordinate and has been appointed the leader of the three Dragon Generals. During the time Narcian was a Dragon General, Galle served as Murdock's lieutenant. Later, after Narcian is slain, Pereth, a Bern General, serves as Murdock's lieutenant. Late in the game, Zephiel sends him to kill Roy and companions and take the Fire Emblem back from them, but he is slain in the Shrine of Seals.

He has a brief cameo in the prequel, Fire Emblem: The Blazing Blade, rebutting a soldier questioning King Desmond's actions and claiming something must be done about the tyrant. His reply to the soldier is slightly ironic considering his role in The Binding Blade's backstory, as Murdock would end up heavily involved with Zephiel's eventual killing of his father.