Daiki Kubo

A member of Hope's Peak Academy's Student Council. He and the rest of the council were forced into a killing game by Junko Enoshima and Mukuro Ikusaba, an event that would later become known as the The Tragedy of Hope's Peak Academy.

He was murdered off-screen during the killing in Danganronpa 3, however he is likely the boy shown in Danganronpa/Zero who beat another boy, most likely Shouji Yokou, to death with a chair. He was then ambushed by another council member, most likely Asukasei Hino, being blinded by glass shards in his eyes before eventually being killed by an unspecified female Student Council member, possibly Suzuko Kashiki, wielding a cleaver.

(Source: Danganronpa Wiki)