Familicide

A familicide is a type of murder or murder-suicide in which a perpetrator kills multiple close family members in quick succession, most often children, relatives, spouse, siblings, or parents. In half the cases, the killer then kills themselves in a murder-suicide. If only the parents are killed, the case may also be referred to as a parricide. Where all members of a family are killed, the crime may be referred to as family annihilation.

There are various types of familicide:
 * Matricide: The killing of the individual's mother.
 * Paticide: The killing of the individual's father.
 * Filicide: The killing of a child (or children) by one's own parent (or parents)
 * Infanticide: The killing of one's child (or children) up to 12 months of age.
 * Mariticide: The killing of a husband or significant other; current common law term for either spouse of either sex/gender.
 * Uxoricide: The killing of a wife or significant other.

Notable villains who have committed familicide

 * Edmund Kemper
 * Adam Lanza
 * Charles Whitman
 * Idi Amin
 * Andrew Kehoe
 * Zachary Davis
 * Jasmine Richardson
 * Chris Benoit
 * Brynn Hartman
 * Jerry Bradish
 * Derrick Bird
 * Karla Homolka
 * Ronald Gene Simmons Sr.
 * Yukio Yamaji
 * Trey Sesler
 * Amy Bishop
 * Jeff Weise
 * Ronald DeFeo, Jr.
 * József Barsi