|“||Friends don't kill friends!||”|
–Suzuko Kashiki, Danganronpa 3: The End of Hope's Peak High School
Suzuko has short brown hair and bright blue eyes. She wears the standard uniform of Hope's Peak Academy with a red ribbon instead of a tie. She also has slightly darker skin than her fellow members.
Suzuko appears to have a kind personality, as her expressions during the beginning of the killing game are especially compassionate and worried for other people, often holding her hands over her mouth.
She agreed with and was calmed down by Sōshun Murasame, saying that they're all friends and thus should not kill each other.
Supposedly, she later killed during the killing game, but she was shown to be very fearful and regretful.
Suzuko, along with the other thirteen members of the Student Council were summoned in Hope's Peak Academy's old school building by Junko Enoshima late at night. Soon after Kotomi Ikuta was murdered by Mukuro Ikusaba, Suzuko and Sōshun tried to calm down their friends by telling them that they shouldn't kill each other as friends.
However, Suzuko's pleas were in vain as Karen Kisaragi soon started the killing game by killing Ryōta Someya. During the killing game, Suzuko possibly killed Daiki Kubo using a cleaver after he was blinded. At the end, she was murdered by Asukasei Hino after begging him to spare her, being shot in the throat while wielding a taser.
- Her given name, "Suzuko" (鈴子) means "bell child".
- Her last name, "Kashiki" (柏木) means "oak tree".
- Suzuko shares a few traits with Aoi Asahina. In addition to similar hair, skin, and eye colors, both girls are especially outspoken about the idea of friends being forced to kill each other and react badly to death in their vicinity.