Siegfried

Siegfried (ジークフリート) is an ungaikyo and the Guardian Ghost of Ashil.

About
Not much is known about Siegfried, other than its O.S. form takes the appearance of a large black suit of armor, with a large glass mirror in its torso. It obeys Ashil's orders without question. The true form of its spirit is unknown.

O.S. Siegfried
O.S. Siegfried Description: The Over Soul takes the form of a giant suit of armor with a huge mirror in its torso. Siegfried's metal body can block most attacks and can constantly regenerate from anything that harms its body using the earth it stands on. It can also grow an additional pair of arms. Its large frame allows for it to attack with powerful blows, and is quite fast, despite its size. Its mirror is able to send out a flash of light to temporarily blind its foes.
 * Shaman: Ashil
 * O.S. Type: Giant O.S.
 * Spirit Ally(s): Siegfried
 * Medium: Dirt

Anime/Manga Differences
Siegfried is a 2001 anime-only character and as such does not appear in the manga series.