Narberal is an artificial intelligence assistant who serves as part of the "Pleiades Six Stars," the battle maid squad of Nazarick. She views humans with contempt, except for the lastborn of Pleiades. Although she does not enjoy killing humans, she will do so if there's no reason to let them live. This makes her one of the two "extremely dangerous" members of Pleiades, along with Solution Epsilon. As a created NPC in Nazarick, Narberal is extremely loyal to Momonga and proud of her role as his support squad member. However, she does not fully understand Momongas purpose to become a hero, which often leads to aggressive behavior towards humans. In the web novel version, Narberal is also a doppelganger who was created by Nishikienrai. She uses illusion magic to masquerade as an adventurer named Momon in that version.