Sayaka Maizono

Sayaka Maizono was the first victim of the killings at Hope's Peak High school.

Danganronpa: Trigger Happy Havoc
She is first seen when she recognizes Naegi out of the crowd of students.It is revealed that Naegi and her went to the same school together. At this time, Monokuma announces that everyone will be forced to kill each other. She looks around at everyone else before it turns crazy and Mondo punches Naegi. Maizono is sitting next to Naegi's bed when he wakes up. They both head over to the cafeteria where the other students are having a conversation. She doesn't contribute to the conversation. At this time Monokuma comes up with an offer. It shows a video to Maizono threatening to kill her band mates if she doesn't kill somebody. With this in mind, she asks Naegi to switch rooms with her for the night. Once he is asleep, she switches the nameplates and leaves a note to Leon Kuwata to come to "her" room. When he arrives, She attacks him but Leon uses the sword in Naegi's room to defend himself. He then kills her to protect himself.

Danganronpa 3: The End of Hope's  Peak  High
She makes a brief appearance as Naegi's Despair induced vision. In this she is telling Naegi that her death is his fault and that he should kill himself.

Trivia

 * Even though Leon confessed to killing Maizono but only to protect himself, He is unfortunately executed for it
 * She is the only villain in Danganronpa to not even kill someone
 * She was in love with one of her band member