The demiurge itself is surely one of the most interesting. Given its role as an overlord, it must have unique abilities and a complex personality.
Any characters that are closely associated with the demiurge, like its servants or confidants, can be really interesting. They may have to navigate the fine line between loyalty and self - preservation. Their internal struggles and how they interact with the demiurge can reveal a lot about the power dynamics and the overall world of the novel.
Ainz is definitely one of the most interesting. His unique position as an undead overlord and his attempts to understand and rule the new world make him a complex character.
The 'Demiurge Overlord Novel' might also explore themes of creation and destruction. As a demiurge is often associated with creation in some mythologies, in the novel it could be creating or remaking the world according to its will. However, this power of creation may also lead to destruction as it reshapes the existing order. There could also be themes related to loyalty and betrayal among the characters in the story, as they interact with the all - powerful demiurge overlord.
Ainz Ooal Gown is surely one of the most interesting. His transformation from a normal player in a game to a powerful being in a new world is fascinating. He has to deal with his newfound power and the responsibilities that come with it.
Sebas Tian is an interesting character. He is a butler with a strong sense of justice. He often has to balance his loyalty to Ainz with his own moral code. For example, when dealing with the situation in the slums, he shows his kind heart while still being a servant of Ainz. Demiurge is also a great character. His intelligence and his elaborate plans to further Ainz's goals are always captivating to read about.
There are several interesting characters. Ainz, as the main character, is full of contradictions. He wants to protect his new 'home' but also has to act in ways that might seem cruel from an outside perspective. Mare Bello Fiore is interesting too. He's shy and gentle compared to the other more powerful and often more menacing characters. And then there's Aura Bella Fiora, his sister, who is more outgoing and mischievous, adding a different flavor to the character lineup.
Albedo is also very interesting. She is extremely loyal to Ainz, but her loyalty sometimes takes a rather obsessive turn. Her beauty and her complex personality, which combines a gentle side with a fierce protectiveness towards Ainz, make her stand out. She also has a lot of power in her own right, which adds to her allure.
Ainz is always an interesting character. His unique position as an undead overlord in a strange new world makes him stand out. He has to constantly adapt his modern - day knowledge to this medieval - like fantasy setting.
Ainz Ooal Gown is very interesting. He is a complex character. He was an ordinary human in his previous life but now has this all - powerful form. His internal struggle between his human emotions and his role as an overlord makes him engaging.
Shalltear Bloodfallen is an interesting character. She is a powerful vampire with a complex backstory. Her struggle between her loyalty to Ainz and her own nature at times is quite engaging. Then there is Demiurge. His intelligence and his schemes to further Ainz's rule are really something. He is always coming up with elaborate plans and seeing how they play out is exciting.
Albedo is also quite fascinating. Her extreme loyalty to Ainz, bordering on obsessive love, makes her actions unpredictable at times. She is a powerful being in her own right, but her devotion to Ainz often overrides other considerations, and this dynamic creates interesting storylines.