Cheap Nexo knight torso and legs that could be converted to Heroes in your Black Falcon Army. These are mix and match minifigures and not the exact figures from the theme. :
LEGO Nexo Knights: The Book of Knights HC (2016 DK) comic books
LEGO minifigures NEXO KNIGHTS | Brickset
LEGO NEXO KNIGHTS The Book of Knights: Includes Exclusive Merlok Minifigure – One Brick Planet
NEXO Powers Rule! (LEGO NEXO Knights: Activity Book with minifigure): AMEET Studio: 9780545905848: Amazon.com: Books