Mabel Henderson's Mr. Handy

 is one of the inhabitants of Vault 112 and part of the Tranquility Lane virtual reality simulation in 2277.

Background
He cooks, cleans and irons so Mabel doesn't have to.

Quests

 * Tranquility Lane: Mabel Henderson's Mr. Handy can be made to kill her. It will then come after you unless you destroy it or go back to the terminal and switch safety mode on.

Appearances
Mabel Henderson's Mr. Handy appears only in Fallout 3.