KL-E-0 is an Assaultron who resides in Goodneighbor and acts as a merchant. She owns the store Kill or Be Killed, which is located directly next to Daisy's Discounts. She sells Potent weapons but in reality, she wants to kill her competitors and reveals that she has a plan to kill several members of the Goodneighbor community if the need arises. She plans to eliminate the Neighborhood Watch and others so she can expand her business and make a new town dedicated to her shop