Mondo Owada (大和田 紋土), is a student in Hope's Peak Academy's Class 78th. His title is the Ultimate Biker Gang Leader. Mondo is a high school-aged teen with memory loss, making him actually two years older. He has slightly tanned skin, a tall, muscular build, and a dark-brown punch perm styled like a 1960s pompadour. His intimidating look includes purple eyes with a deep black eye-line. His outfit resembles that of a Japanese biker gang member, featuring a high-collared black long coat ("tokkō-fuku") adorned with The Crazy Diamonds and kanji symbols, over a white A-shirt. He wears baggy black pants with a Komainu-shaped belt buckle and white loafers. Mondo behaves like a delinquent, being foul-mouthed and intimidating. Makoto keeps conversations with him short to avoid provoking his easily-aggravated nature, which can turn violent, especially during his confrontations with Byakuya. Mondo struggles with a complex about appearing weak, believing he must be strong. This complex stems from the fact that his gang members tended to look down on him due to his status as the little brother of Daiya, the first leader of The Crazy Diamonds. Mondo ultimately caused his brother's death in a street race by acting rash in oncoming traffic, prompting Daiya to save Mondo in exchange for his own life. It was Mondo's own weakness who caused Daiya's death and this constant burden was placed on him, as he had to live with and share the lie with the rest of his members that it was Daiya who had acted rashly. Mondo states that he tends to be very nervous around girls that he likes, causing him to raise his voice and ultimately scare them away, something that has happened at least 10 times already. This potentially shows that Mondo is shy around new people and is unaware of how to relinquish his ruffian type personality while in calmer situations.