Also known as: クリームヒルト・グレートヒェン, Kriemhild_Gretchen, 救済の魔女
Mahou Shoujo Madoka Magica character. A tremendously huge mountain-sized Witch (Madoka Magica), appearing as a figure with its arms up, wearing a dress that has countless tentacles stringing from it. She is orders of magnitude more powerful than even Walpurgisnacht (Madoka Magica), and her coming heralds the end of the world. She's named after Kriemhild (Nibelungenlied).
Note: Major spoiler warning!
Kriemhild Gretchen appears in the second and fourth timelines, the result of Kaname Madoka becoming a Witch.