- For its Neutral and True Pacifist Route counterpart, see Heart Locket.
The Locket is an armor item found in Asgore's Home. It is the Heart Locket's Genocide Route counterpart. Its offensive counterpart is the Real Knife. It is the Genocide Route armor item associated with the first human.
- Despite being the toughest armor in the game, it never sees any real use as it is found right at the end of the Genocide Route, and Sans, the last enemy of a Genocide Route, always deals one damage.