Siegfried is the leader of the Quarter Knights and, in the wake of Mother's torpor, their de facto leader. He acts as their field marshal, but his sense of honor demands that he lead from the front instead of hidden away in the Photosphere. Donning black armor and carrying the Dark Spear, Glumzambor, Siegfried is a force to be reckoned with. He is brutal and ruthless on the battlefield, and his honor only causes him to respect his opponents, while viewing most humans as weak and undeserving of mercy. The conquest of Filgaia and restoration of Mother is his personal mission, which he has sworn himself and every Metal Demon to.
Siegfried is a master swordsman, who wields the Dark Spear, Glumzambor. The blade is a powerful ARM capable of projecting terrific energy blasts into his opponents -- as well as cutting through even Gears easily. He also enjoys several built-in ARMs on his armor, including a forearm ion cannon and a powerful energy cannon mounted in the chest.
Siegfried and Riesenlied, a little less than 500 years ago.
Metal Demons
Berserk: Mother's hammer. At times, he irritates Siegfried, but he does what Siegfried requires.
Alhazred: Frankly, this guy disturbs Siegfried on so many levels, but the Metal Demons' situation is dire enough that Siegfried puts up with it.
Lady Harken: The newest of the Quarter Knights. Her eagerness to prove herself is useful. And yet, there are troubling rumors...
Riesenlied: One of his few friends. She may be his subordinate, but he values her intuition and initiative -- even if Riesenlied's morals and values differ greatly from his.
Noeline: Her loyalty seems to be to Riesenlied, instead of Mother. At times, this vexes Siegfried, and yet he respects her resolve nonetheless.
Zed: Perhaps over eager... and yet, there is potential.
Yarobeleedt: A strange one, and yet useful in his own way.
Other Allies
Volsung: The Veruni are not unlike the Demons, and Siegfried can appreciate that.
K.K.: The Trial Knight, who has sworn to remind humans of the fear they forgot. Siegfried values them, even if he has questions.
Enemies
Fei Fong Wong: He reminds him of lost friends. Of past failures.
Id: And this is the failure that Fei and Id both remind him of most. He will kill them, both, if he must.