Brooklyn's Back!
It’s mid-way through Tyson and Brooklyn’s final tie-breaking ‘Justice 5’ match which could give BEGA a stranglehold on the entire sport of Beyblading. Having suffered his only previous defeat at the hands of Kai, Brooklyn’s thirst for revenge takes the form of an unearthly power. Not only has his Beyblade Zeus given Brooklyn sinister black wings with which to fly, it has generated a giant vortex in the sky that is wreaking havoc on the city. Buildings are crumbling everywhere. The entire world is being enveloped by the growing darkness. Only Tyson can stop Brooklyn before it’s too late. Summoning his own formidable power from Dragoon, Tyson flies into the sky to convince Brooklyn to cease the negative emotions that are causing the havoc. When reasoning fails, the pair continues their battle above the ever-crumbling city. The tide turns in Tyson’s favor when he is able to summon the spirits of his teammates’ blades and merge them with Dragoon, which evolves into the most powerful Beyblade ever. By probing deeper into Brooklyn’s psyche, Tyson learns that his foe's anxiety stems from childhood isolation at being a genius so early in life. Tyson makes Brooklyn see that Beyblading is a pure sport to be enjoyed for one reason alone – the love of the game. Brooklyn calms down. The chaos ends. And the pair continues their match simply for enjoyment. With BEGA's HQ in shambles, the upstart league and its owner Boris are ruined. Mr. Dickenson’s BBA league restarts, but in a much more modest form. And kids everywhere – including Tyson and his friends - return to the simple, purest form of Beyblading.Then Tyson and Kai battle one last time
Aired 29/12/2003EP 51 - Brooklyn's Back!

Beyblade G Revolution
After keeping their BitBeasts out of harm's way, a new world championship tournament is announced, but the defending champions can't all be on the same team. Their friendship will be tested and tried as each Bladebreaker goes on a quest to prove why they are the best Beyblader around. Tyson, Max, Ray, Kai, and newcomer Daichi, must keep up their winning ways...even if they must face each other. But, after the tournament is over, what awaits them is an old foe, Boris, taking over the BBA and transforming it into BEGA, the Beyblade Entertainment Global Association. To save Beybladers of the entire world from BEGA's corruption, the Bladebreakers must reunite once again...
(Source: Anime News Network)