Necroplasmic Mantle is a cloak worn by Ainz Ooal Gown when acting as Momon in the New World.
The Necroplasmic Cape is an example of a cape created by Momonga. According to the maker, it was inspired by an anti-hero from American comics.
The red cape of Ainz Ooal Gown's Adventurer Persona is usually worn around his neck.
It is a relic class item, two levels below Ainz Ooal Gown’s normal gear.
- The anti-hero that the comic is based on is probably Spawn.
- Ainz most likely wears the red Necroplasmic Mantle cape out of admiration for Touch Me who also wore a cape similar to his own in terms of its color.