Darkblade is the akumatized villain of Armand D'Argencourt.
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.
- Darkblade's name comes from the that of his ancestor.
- As such, Darkblade is one of the villains who Hawk Moth technically doesn't name, the others being Horrificator, Volpina and Anansi.
- Unlike most villains, Darkblade never makes an attempt to get the Ladybug and Cat Miraculouses.
- Darkblade reappears in the two-episode special event "Heroes' Day".
- Darkblade appears another time in "Gamer 2.0" for Gamer's powers.
- A statue of Darkblade appears in the Musée Grévin in "The Puppeteer 2".