Lot of 4 Bakugan Battle Brawlers Ani-Manga Collection: 
 
Bakugan Battle Brawlers
Bakugan Battle Brawlers: A Feud Between Friends
Bakugan Battle Brawlers: Dan and Drago
Bakugan Battle Brawlers: The Masqurade Ball
Cartoon Network (Author)
THE BATTLE BEGINS!

Dan Kuso and his friends are Bakugan Battle Brawlers, warriors who use the power of their magic cards-and their battling Bakugan guardians—in the ultimate fight against evil. Now Dan has a new Bakugan ally: Drago, an awesome, gigantic dragon from the fire world of Pyrus. Drago's on a quest to save Vestroia…and discover the secret origin of the Bakugan!

Based on the toys and the hit TV show!