Bleda was the son of Mundzuk and brother of Attila the Hun. Bleda was killed by his brother at some point before 451 AD.

During his encounter with the Thirteenth Doctor and Team TARDIS, Bleda's brother Attila introduced himself as "Bleda, Commander of the Ten Thousand Horsemen, right hand to the king" to hide his real identity. He maintained the charade until he returned to the Hun camp with the Doctor and Yasmin Khan as prisoners in tow. Relieved to see their leader still lived, Attila's men bowed before him and greeted him by his true name, exposing Bleda as an alias. (PROSE: Combat Magicks)

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