Eh...might as well take this guy. His class is Foreigner, as his sword is already a Foreign, and is basically haunting him already
Name: Brave
Class: Foreigner
NP:
Reincarnation Pandora: The nature of this NP culminated into a single sword. It have an ability to eat anything, and extracting both "Energy" and "Information" of it to be absorbed into it own. If he's not careful, it could end up eating into his own body, so he must always bring it into a good source for comsumption.
It could also turn into a blond loli with yellow eyes, cute little face and is wearing a white onepiece. For some reason, she's really attached to him.
Enuma Elish (Enkidu): As a living NP, this sword laid dormant in the beginning. She would naturally wake up if given alot of "Energy" to eat, but she could wake up willfully if a huge source of "Energy" is coming her way, and trigger her appetite.
She eat alot more when she wake up (surprisingly, that's still her "holding back"), but in exchange, instead of just using the mana stored to passively strengthen, she could ultilize the "Information" of the thing she eat and enable the usage for her owner, transforming into many form to suit his need.
When she eat in her human form though, she look like a little puppy munching on the food, and with that look she always demanded for more. This cunning strategy have earn her alot of treat.
Nine Lives: After that, it's just the problem of using it properly. So it's fortunous that the one who used her is even more scary than the weapons itself. Even without her in his hand, anything that he recognize as a "weapon", even the "world" itself, will be used by him "to it full potential". While it cost him nearly nothing for him to used anything physical, the more abstract something is, the more strength he needed to expend to used it, so he usually need her help for that.
Skill:
Self-Modification (Sword) (EX): Strictly speaking, only the sword could used the ability, while the Servant himself usually dictated how it goes. Because of that, the sword itself could go on without him for awhile, and sometimes she's stubborn to keep her human form for awhile more...
Clairvoirance (EX): A skill which come about, partly due to his talent, and partly due to being partner (haunted) with her. He found it the most useful whenever she wake up and is having him as appetite. However, she also find it the most useful whenever he escaped and is finding him. An endless game of chess of eat or be eaten.
Determination of Steel (EX): With it effect, he could feel no pain and his body could endure everything, whether if the sword is eating onto him, or whether she's chomping him out of hunger, or whether she's play-biting him out of mischief.
Combo NP/Skills:
World's Eater:
Originally, the sword is a being who could eat even the fabric of the universe, eating and tearing up many worlds in it path.
Performing her's tale again, she "eat" a part of a world, controling the properties of that certain zone. Any enemies that's also in the zone, once in, will be slowly devoured, their "Energy" used to keep this NP running, and their "Information" stored, until not even a soul is left in this world. The only way to turn the NP off is if the Servant itself's willingly do so, since the more it's goes on, the more energy he have to expend to keep her from devouring the world that have been kept in her "stomach" too much.
The smaller the zone is, the longer he could kept it up too, so he could used it as a shield that could block everything around him, and even redirect it. It could also "eat" the user itself, forcefully revealing the inner world he held inside, creating an artifical RM, of sort.
Weapons: A sword with a blue gem as the guard
Appearance: A guy with a messy appearance