One of Reiji's rivals who works for RI-ON. Struggling to fulfill his family's high expectations, he strives to defeat Hikaru and take his place as the number one Dragon Drive player in the world. He has the habit of saying to defeat his opponents in 10 minutes.   ~!He later betrays RI-ON and joins up with Reiji's comrades to save the two worlds.!~     Cited from: Wikipedia

Oozora Reiji isn't a lazy boy, he's just terribly unmotivated; all the clubs and activities he's joined don't interest him for long. That is, of course, until his best friend Yukino takes him to a underground arcade where an unbelievable virtual reality game is played - Dragon Drive - in which players fight each other with virtual dragons. Reiji ends up throwing all he's got into training a dragon so rare that the Dragon Drive staff are baffled. But soon Reiji learns that Dragon Drive isn't all it seems, and he might be the only one who can save an entire world from evil.
 
(Source: Anime News Network)

Bill Switzer is a Canadian actor. He is perhaps best known for playing the title roles in two successful television series, Eerie, Indiana: The Other Dimension and Sabrina: The Animated Series.

Reiji Oozora is a total loser! Not good at anything especially schoolwork! One day his friend Maiko Yukino offers to share her class notes with him to help him out on the condition that he takes her wherever she wants to go. She takes him to a secret place where a virtual reality game called Dragon Drive is played. Reiji signs up, gets his own dragon, which ends up being the smallest and weakest in the game! Because of its tiny size Reiji names the dragon Chibi. 
Right after joining the game Reiji and Maiko are sent to battle a classmate who has as crush on Maiko named Daisuke. Reiji runs from the battle and just when it seems like he can't win his dragon does something impossible! It suddenly powers up and defeats the much larger dragon. Reiji wins and is suddenly addicted to this new exciting game. 
A staff member of the Dragon Drive virtual reality game named Agent L realizes that there is something incredible about Chibi's performance and invites Reiji and Maiko to a special training room. There she reveals the real purpose of the game is for players to bring out their dragons' true potential. Just then a strange girl riding a dragon appears and takes them to a fantastic magical world. It turns out it this world is in peril of being taken over by an evil group called RI-ON and the only thing that can possibly stop them in none other than Reiji's little dragon! Thus the adventure begins! 
 
(Source: Viz Media)

Ichiro Sumishiba