Kyousuke Arasaki is the main antagonist of Crash B-Daman. He wields the Revolver-Type B-Daman Omega Bahamut and a Rush-Type variant named Alpha Bahamut, both of which able to combine, forming the unstoppable Ultimate Bahamut.
He first obtained his Omega Bahamut in episode 40, and later, his Alpha Bahamut in episode 43. His past shows that his father held a grudge against Saionji Konzern for being thrown away. His father told him to never trust in anyone and wants to rule the world, but died in the end with Kyousuke burying his father's own grave. For his father's sake, he works with Saionji Konzern and betrays them in the later story, became the new president of Saionji Konzern. In the end, his plan to rule the world failed when Kyousuke was defeated by Hitto in the last episode and fell into an explosion. He suddenly reappears and told Hitto's father that he will not lose to Hitto next time, and disappears in the light.
In the manga, he is the oldest of the eight successors of Evil Gods organization. The Evil Gods crest is on his forehead. He often bullies Teruma by using a whip, and kicks Kodoh on the head. He also calls Kodoh by the name "Kodoh-chan". He has a strong desire to become Tycoon Shō's successor. He owns a bad personality and calls Hitto as "that toy". It was revealed that he is Shō's second experiment to create a very strong B-Der. While battling Hitto, he got thrown in the sky and fell into the sea, and as the Evil Gods organization's castle collapse to the sea, he holds against a floating driftwood in the middle of the sea and made himself to the land. In the end, he swears that he will return and get his revenge on Hitto and Shō.
