Kriemhild Gretchen (Canon)/ZeroTwo64

1="Witch of salvation. Her nature is mercy. She absorbs any life on the planet into her newly created heaven--her barrier. The only way to defeat this witch is to make the world free of misfortune. If there's no grief in this world, she will believe this world is already a heaven."
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 * -|Ultimate Kriemhild Gretchen=Ukg.jpg
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- Official Description of Kriemhild Gretchen

2="The Witch of Despair. Her nature is direct petition. The mouthpiece for all the unfulfilled hopes of all spent magical girls. If a hope is born that can rewrite the universe, then at the same time, it is born from the mud of despair. Everlasting wailing fills her body, a continuously swelling, empty doll. At the end of a magical girl’s karma, this witch continues to swell to absurd sizes. And in the end, her body could even destroy the galaxy."

- Official Description of Ultimate Kriemhild Gretchen

3="The Minion of the Witch of Salvation. Their task is measurement. They can expose the [impurities] of the hearts of those who go to Heaven by weighing the sins place on their scales. The sinful are perhaps granted even more profound mercy than from the witch."

- Official Description of Kriemhild Gretchen's Minions

Summary
Kriemhild Gretchen is the witch form of Madoka Kaname and the strongest witch ever existed, surpassing even Walpurgisnacht's powers. She appears in 2nd and 4th timelines of episode 10, and in episode 12 as Ultimate Kriemhild Gretchen. In the second timeline, her formation involves thunderclouds coalescing initially into a giant humanoid and then she seems to form a mountain-like being. In the fourth timeline, she is shown as a giant creature, actually the size of a mountain. According to Kyubey, this witch is so strong that can create a barrier surrounding earth, and then absorbing the life of every being of the planet. In episode 12, final timeline Madoka's witch form, appears at the end of the universe, born from all the grief Madoka had shouldered from the magical girls she had saved, due to her supremely hopeful wish. She inhabits a comet-sized grief seed and, unlike the second and fourth timelines' versions of Kriemhild, has a fully-shown face. She is destroyed by Ultimate Madoka before she can consume the whole universe with her curses.

Powers and Stats
Tier: At least 4-A | Low 2-C

Name: Kriemhild Gretchen, Ultimate Kriemhild Gretchen, ?????

Origin: Puella Magi Madoka Magica

Gender: Female

Age: Unknown

Classification: Witch of Salvation | Witch of Despair

Powers and Abilities: Superhuman Physical Characteristics, Magic, Magically Enhanced Physiology, Immortality (Types 2, 6, 7 and 8. Can exist as long as there is misfortune in the world), Transformation, Telekinesis (Her abilities with the telekinesis are even better than Walpurgisnacht's), Weather Manipulation and Electricity Manipulation (Her appearence caused a massive storm with lightnings), Energy Manipulation, Acausality (Just like Madoka, she is a singularity for cause and effect), Summoning (Can summon ), Reality Warping, Pocket Reality Manipulation, Mind Manipulation, Life Absorption, Curse Manipulation, Despair Enpowerment, Despair Inducement, Sadness Inducement, Mindscape Materialization(Her interior like Madoka's house and ), Illogical Maze Creation, Labyrinth Manipulation, Suicide Inducement, Invisibility (A witch can only be seen by magical girls, other witches and Kyubey), Afterlife Creation (Her barrier has been described as a heaven), Primordial Embodiment (Became the Witch of Salvation). Resistance to the followings: Magic, Status Effect Inducement, Life Absorption, Mind Manipulation and Soul Manipulation | All of the above, but greatly enhanced, Size Manipulation (Constant growth), Intangibility, Abstract Existence, Non-Corporeal, Flight, Immortality (Types 3, 5 and 11), Despair Embodiment (Is regarded as the Witch of Despair).

Attack Potency: At least Multi-Solar System Level (Far superior to 3rd timeline Madoka and Walpurgisnacht. Was stated to be able to create a barrier that would absorb the Earth whole, with the barrier itself being much larger, but its size is unknown. Should be much stronger than Doppel Kriemhild Gretchen) | Universe Level+ (Kyubey stated that this form could destroy the Universe and create a new one)

Speed: MFTL+ (Should be superior to 3rd timeline Madoka) | Omnipresent (Her curses affected the whole Universe)

Lifting Strength: Unknown | Unknown

Striking Strength: Unknown | Universal+

Durability: At least Multi-Solar System Level (Superior to Walpurgisnacht and 3rd timeline Madoka) | Universe Level+ (Although she was one-shotted by Ultimate Madoka, she is vastly superior to other magical girls, including final timeline Madoka, her magical girl counterpart)

Stamina: Limitless | Limitless

Range: At least Planetary w/ her barrier | Galactic by sheer size. Universal w/ her curses

Standard Equipment: None

Intelligence: Low, likely Mindless as Ultimate Kriemhild Gretchen

Weaknesses: None Notable

Key: Kriemhild Gretchen | Ultimate Kriemhild Gretchen

NOTE: Credit to Puella Magi Wiki

NOTE 2: Ultimate Kriemhild Gretchen has never shown to have Conceptual Manipulation, Law Manipulation and all the powers of the other magical girls. Her powers are also different to Madoka's. UKG is Universe Level+ at her best (for Kyubey's statement both in the anime and the manga) and was killed by Ultimate Madoka in episode 12. There aren't enough proofs to say that the witch inside Homura's shield in Puella Magi Madoka Magica Wraith Ark is Ultimate Kriemhild Gretchen, and it was never specified in the manga.

NOTE 3: This profile only contains stats for Kriemhild Gretchen (Madoka's witch form) and Ultimate Kriemhild Gretchen (Final timeline Madoka's witch form). If you want to see Madoka's profiles, click here.