Wario is the driver of the Aegis, but he isn't alone. "Behold the mighty WALUIGI VON GENBU, BRINGER OF CHAOS! ALSO KNOWN AS WALUIGI! AND OFTEN ADRESSED AS THE WAHH-INATOR!"
Hm yes it does appear that Wario (from the Super Mario series of games) has made himself the driver of the Aegis blade Pyra (from the Xenoblade Chronicles 2 game)