[KiNA]

This thread is to discuss the origin of the weapons characters in Soul Eater. We have currently 4 (or 5 of we considered the sisters as 2 weapons), Soul, Tsubaki, Thompson sisters and lastly Maaka's dad. Are they originally human? or are they manufactured?

So what do we already know about these guys/gals.

Soul..
Not disclosed yet but we could guess a bit..

Spoiler for manga:

He is kinda from a high class society. The way he carry himself in the manga while with Maaka, his ability to play piano. Sort of runaway high class kid that want to live out his life away from status .. To earn the cool guy status on his own.. In a way, a human origin.

His first dialogue in the anime also says that he is similar to Jack the Ripper. Which is nonhuman.

Tsubaki..

Spoiler for manga:

Comes from a family of ninja. Because of her older brother inefficiency, ends up inheriting all the clans skill as a weapon (except for 1, until she absorbs her brother). Unlike Soul, now it seems that she became a weapon by tradition.

Thompson sister..

Spoiler for manga:

Picked by Death from the street. Like Soul, dont seems to have a history before that

Maaka's Dad..
A weapon.. Also a human as he is Maaka's dad.. The first guy that made me curious as to what weapon's actually are in the first place

Manga weapons..

Spoiler for manga:

Then we have Ragnarok, who lives inside Chrona and appearently manufactured by Medousa.

Also, in the latest chapter translated, the emeth(thanks NSW) creator is a weapon himself. Transformed by himself.

So, how actually a weapon is born? Voluntarily offer to turn into a weapon? Trained and learn the art to become one? Manufactured yet have ability of a fully functional human? (As Maaka's dad proves )

NOTE:
Please bear in mind that manga spoilers would be unavoidable and thus, requesting full cooperation to posters to fully tag each properly. Thank you