Austin O'Brien

Austin is a new student hailing from West Academy who enters Duel Academy in the third year. A battle-hardened and efficient mercenary, he is introduced as Professor Viper's right-hand man, but later joins Jaden after Viper's dubious actions caused him to betray Viper and subsequently to be imprisoned by Viper.

Auston wields a retractable Duel Disk resembling a gun which can be stored in a holster at his waist. In the past, he trained extensively with his father (a mercenary) on jungle terrain, learning the art of survival. During his time at West Academy, he adapted these skills to the performance of life-threatening wire stunts to master his drawing technique.