name:Aegis Getshohomatu

Age:51,749 years old

Gender:none

Race:spirit

Allegiance:the highest bidder

Languages know:Yokan ancient, Lacien, Bottan common

Apperance:A very large spider made of many differant and unknown substances

personallity:More of a mercinary, do to his lengthy time "alive" he act like a know it all, is very hard to surprise (he's seen it all) and is very cold, he is disconected from the wourld so as to eliminate regrets and to ensure the mission is completed, likes to sleep

History:Well for the most part he was a mercinary, hired by humans, summoned by deamons, and is one of a rare kind of spirit,made of cosmic matter, litteraly, he is made of space and time, This means that while powerful, he is very unstable and a single incredibly powerful attack will cause him to destableize and reture to his own dimension, he is a high level Spirit and as such, has been called on for countless missions over the millenium, and has done many horrible things, he has sometime killed thoughs who have summoned him, simply for being stupid enough to do it, other times he did it for fun or being irritated by their requests, and as suck, only incredibly powerful individuals have called upon him in resent years. Latly though, he hasn't seen much work, and is some what worried if the world has forgotten him.

It's an interesting idea, though I would think it'd be a better NPC because you'll have to rely on other people to summon you to the worlds to have much interaction, and if you narrow it by saying only stronger people can survive then it'll be even rarer.
If you want to go with it, though, I'd say tone down the incredible strenghts a bit, introduce some weaknesses or so to make the character a bit less godly powerful kind of thing. XD

ok, their, one big weakness, and yeah I already know that, but it's worth it