Bakugan Battle Brawlers (2007) : 2x18

Dan, with the help of Apollonir, brawl against Drago, but Drago is not himself any more. Spectra has turned him into a corrupted black dragon. Dan tries to reach out to his friend, but it seems that Drago is unable to listen. Spectra uses the power of many forbidden cards to access Drago's Perfect Core abilities, but it puts Drago under mounds of stress. The legendary warriors conclude that Drago should not have been able to access the Perfect Core's power and change attribute while in his new body, but the power of the forbidden cards allows him to do so. Things look bad for Apollonir, as Drago seems unstoppable with all this power. Dan then notices that Drago is crying and that if he doesn't stop Spectra from giving Drago so much power, Drago could die. Apollonir believes that the only way to help Drago is to transform himself into pure energy and enter Drago's body to absorb the extra energy, however, Apollonir will not be able to attack or defend himself. Also, Dan must throw Apollonir into Drago's chest, but if he misses, Drago's condition could worsen and Dan may end up killing Drago and New Vestroia may turn back into six separate worlds. Dan successfully launches Apollonir into Drago's chest and Drago falls, defeated, returning to his normal self. Dan and Drago are happily reunited while Spectra does not seem that affected by the loss, and only insists that things will be different the next time they meet