Jezebel

Jezebel is a dismantled robobrain in the Fort Hagen hangar in Fallout 4.

Background
Jezebel possesses a very rude personality, making no secret of her doubts in the Sole Survivor's abilities. She wastes no opportunity to belittle their allegedly minuscule intelligence. She is fully aware of her hostile personality and even mentions it to the Sole Survivor at one point. Saving and rebuilding her does not change her attitude in the slightest. She will vocally complain about her new body, regardless of its components.

Compounding Jezebel's unfriendly behavior is the fact that she is a prime example of many robobrains' tendency to misinterpret orders and follow their abstract logical reasoning to highly dubious conclusions. During the conversation following her rebuilding, she mentions that she is, in her opinion, helping the human population of the Commonwealth. When pressed by the Sole Survivor how she can possibly claim to be helping humans when she is actually killing them, Jezebel reasons that the logic of attempting to help humans survive has a 25% percent chance of success, or in other words, a 75% percent chance of the humans dying anyway no matter what she does. She, therefore, deduced that simply killing them right away is the most efficient solution as it only serves to hasten mankind's inevitable fate and spares them the suffering of their existence.

Other interactions
The Sole Survivor first meets Jezebel during Headhunting as a disembodied robobrain's head deep within the Fort Hagen satellite array, where she is held captive by the Rust Devils. She offers the Sole Survivor information on the Mechanist in exchange for her rescue and the Sole Survivor constructing a new body for her.

Once her demands have been met, she honors her end of the bargain by revealing the Mechanist's location and how to enter the mysterious figure's hideout. Afterward, she stays at the settlement where she was reconstructed but may be sent to another settlement. She remains there for the rest of the game, having no other role as a result.

Appearances
Jezebel appears only in the Fallout 4 add-on Automatron.