Howlkor x Serpenteze is a Fusion Bakugan that is made up of Howlkor and Serpenteze. It appears in Bakugan: Armored Alliance. It was first seen at the 2020 New York Toy Fair.
A Darkus/Aurelus Howlkor x Serpenteze comes exclusively in the Battle League Coliseum.
A Darkus/Aurelus Howlkor x Serpenteze Ultra was seen at New York Toy Fair.