Beyard is the boss of Chapter 7x of Fire Emblem: Rekka no Ken. He is one of the first Black Fang bosses you fight. It is assumed that he had a little power, as he was Ursula's assistant. He also shares an odd resemblance to Eubans, another enemy boss in a later chapter. The two's portraits have their pallete colors swapped.
After Lyn's ambush on Black Fang forces, Beyard has fallen from Ursula's graces. However, he has a plan to use Nini's Grace, the ring stolen from Ninian, to lure Lyn's group to the Black Fang fortress, where he hopes to kill her and her forces, and capture Nils and Ninian. When he is defeated at Lyn's hands, he punishes his own failure by following the Black Fang code of conduct: he takes his own life with poison.
Sword - B
Beyard is among a narrow list of bosses who lack the ability to move and lack the ability to attack at a distance. Given this, and given the fact that he has abysmal resistance, he is easy fodder for Erk's and Lucius' magical attacks.
“How? This can't be...They should be dead! Everyone! Get in there and finish them! This is our final chance!”
—Quote at the end of Enemy Phase Turn 2
“I mustn't fail...I cannot fail. The consequences are too--”