Armand D'Argencourt

Armand D'Argencourt is a fencing and PE teacher at Collège Françoise Dupont. In "Darkblade", after losing Paris' mayoral election to André Bourgeois and being publicly humiliated for it, Hawk Moth infects him with an akuma, transforming him into Darkblade, a medieval knight supervillain.

Physical appearance
Armand is a tall, thin and muscular man with a small amount of dark brown hair atop his head and blue eyes. He has a long and narrow with a large curly mustache.

Civilian attire
He wears a white fencing outfit, with thin red, white, and blue lines on the sides. On top of it, he wears a black fencing guard that is attached with two gray straps. On the left side of the guard, there is a silver shield symbol with a black phoenix-like creature. He also wears white boots that end below the kneecaps with thin red, white, blue lines over the toes. When he is fencing, he uses a white fencing mask.

As Darkblade
Darkblade wears a full suit of dark gray armor, some parts of it having lighter gray with dark gray stripes. The visor on his helmet has four red leaf-shaped marks, and the helmet's comb is large and red, its shape a bit zigzagged. The besagues have red curled outlined designs on them, and on the center of the breastplate, there is a red family crest design with a black outline and a black phoenix-like creature inside. His couter and poleyns and pointed, and the end of the sabatons are pointed. His sword is large, with a silver and dark gray striped hilt and a dark gray blade with red lines making a design on each side. At the middle of the cross-guard, there is the same family crest symbol as the breastplate, except it inverts colors and glows when it is shooting energy.

Personality
Armand is a serious and proper who is inspired by the ideals of knights from the medieval ages, and he is bitter with how underhanded tactics resulted in his ancestor losing his rule over Paris. He didn't run for mayor of Paris because he wanted revenge, but he is frustrated with his loss to André Bourgeois and how everyone takes him for a man obsessed with medieval times, whether true or not. To Adrien Agreste and his other fencing students, he is challenging, but good at teaching them and helping them improve.

As Darkblade, he is commanding and obsessed with conquering Paris. Power-hungry and enraged with the current government system, Darkblade wants to take over the country his ancestors lost centuries before, and he has nothing against turning everyone into knights that will follow him to victory.

Trivia

 * He will appear in Tino's Adventures of Miraculous: Tales of Ladybug & Cat Noir.