The first series ran for 65 episodes back in 2014 while the second ran for 50 episodes.
Their rivals include ex-Buddy Police Tasuku Ryuenji, and the self-proclaimed strongest combination, Gaito Kurouzu and his buddy monster Black Death Dragon, Abygale.
The two will have to battle others in a card game called Buddyfight, which allows monsters to fight alongside humans as buddies.