Shun Kazami is a young Japanese boy that appears in Bakugan Battle Planet and is a member of The Awesome Ones. His main Bakugan is Aquos Hydorous and he also owns a Aquos Fade Ninja and Vicerox, which were both given to him by Toshi.

Shun carries himself like an adult. His serious demeanor is reflected in his choice of clothing. A clean-lined blue suit. He has one for every day of the week, just like Einstein.

Do you recall that the Heroes have one fan? Well this is him. His name is Shun Kazami, and he’s traveled half way around the globe in order to join Dan’s team for Bakugan battles. Mature for his age, precocious and mysterious, Shun appears in Dan’s town after witnessing Drago’s discovery. In fact, Shun is responsible for sharing the video with friends and letting it out into the world! Shun has been a secret student of his own Bakugan ever since their awakening, but could not find anyone who appreciated this strange new species the way he does... until now.

Shun has a deep love for Bakugan and a secret thirst for a group of friends. But Shun has led a very cloistered life. Only through watching Dan, Wynton, and Lia Venegas online has he found the courage to leave his home and travel to America, where he believes his true destiny awaits. But how could a ten-year-old come from Japan by himself? Could it be that his grandfather is the founder of Kazami International Holdings, makers of the tech that power almost every computer on the planet? That’s exactly how. But Shun doesn’t care to brag. Nor does he want to rely on his family’s fortune for success. Shun has a strong drive to prove himself in his own way as a Bakugan Battler, and maybe if he can relax just a little bit and let down his guard, he’ll make life long friends in the process. Shun is about winning above all else. He is not ruthless or mean, just overly-focused on results. In time, his friendships with the rest of the team will make him a more well-rounded person and a better battler/player.

(Source: Bakugan Wiki)