Eric Harris and Dylan Klebold

Eric David Harris (April 9, 1981 – April 20, 1999) and Dylan Bennet Klebold ( KLEE-bohld; September 11, 1981 – April 20, 1999) were an American mass murder duo who perpetrated the Columbine High School massacre, where they killed 13 students and one teacher, and wounded 23 others. After killing most of their victims in the school library, the two died by suicide.