Albedo does not have a sister overlord in the strictest sense of the term. Albedo is a character in the anime/manga/light novel series “Overlord,” which is about a player named Momonga who becomes trapped in a virtual reality game called Yggdrasil after the game’s servers are shut down. Momonga, now known as Ainz Ooal Gown, discovers that the NPCs (non-playable characters) in the game have gained sentience and decides to rule over them as their Overlord.
Albedo is one of the NPCs created by Momonga in the game and is designed to be the Overseer of the Great Tomb of Nazarick, which is the base of operations for Ainz and his followers. Albedo is a guardian, tasked with protecting the Tomb and its inhabitants, as well as carrying out the will of Ainz. She is extremely loyal to Ainz and is willing to do whatever it takes to serve him, even if it means betraying her fellow NPCs.
In the context of the series, there is no mention of Albedo having a sister or any other familial relationship with another NPC. However, there are other characters in the series who could be considered Albedo’s “sisters” in the sense that they are also NPCs created by Momonga.
One such character is Shalltear Bloodfallen, who is another guardian of the Tomb and is tasked with defending the throne room. Like Albedo, Shalltear is fiercely loyal to Ainz and is willing to do whatever it takes to serve him. However, unlike Albedo, Shalltear is also a vampire and has a more aggressive and bloodthirsty personality.
Another character who could be considered Albedo’s “sister” is Aura Bella Fiora, who is a beast tamer and is tasked with maintaining the creatures that live in the Tomb. Aura is also extremely loyal to Ainz and has a close relationship with her brother, Mare Bella Fiora, who is another NPC created by Momonga.
In addition to these characters, there are several other NPCs in the series who could be considered Albedo’s “siblings” in the sense that they were all created by Momonga and are all devoted to serving him. However, it is important to note that these characters are not related by blood and do not have any familial relationships with each other.
In conclusion, while Albedo does not have a sister in the traditional sense, there are other characters in the series who could be considered her “sisters” in the sense that they are all NPCs created by Momonga and are all devoted to serving him.