Ouzen

Ouzen is a character from the Made in Abyss anime and manga.

Out of all the White Whistles, the Immovable Lord is one who shatters human limitations for sheer physical strength. A hot subject of rumors dating back as far as fifty years, she currently operates the Seeker Camp located in the Second Layer, where she awaits the arrival of a certain bespectacled girl.

Her White Whistle is adorned with a pair of horns, resembling the visage of an ox.

Appearance
Ouzen is a very tall and rather slim woman who stands over 2 meters in height. She has a strangely shaped monochrome hairstyle that conceals the scalp deformations caused by the intensive exposure to the Curse of the Abyss.

Her eyes are pitch black and lusterless, giving her a rather unsettling and disturbing gaze. When fully equipped for delving, she wears bulky armor and a disc-shaped hat that covers her eyes.

Her White Whistle is adorned with a pair of horns, giving it a bovine appearance. Despite being more than half a century old, she appears quite youthful, with only her white hair showing her age.

Personality
A coldness dominates her personality, and she can often be cruel, cynical and apathetic. Even after discovering that she couldn't even scratch Reg during their fight, she continued to hit him anyways, citing that 'after a while [she] just got too into it'. She despises lying to children, and rarely lies to them — even if it means telling them brutal truths. Ouzen has absolute control over her facial expressions, making her actual feelings (or lack thereof) normally ambiguous.

However, she is not completely devoid of warmth and it is shown that secretly she dearly cares for Lyza. When Riko and Reg left the Seeker Camp to journey into the depths of the Abyss, Ouzen revealed that she would've liked it if she didn't need to send them off before she could reminisce more about Lyza. She also treats her newest apprentice Marulk for the most part kindly, allowing him to stay at the Seeker Camp so that his eyes wouldn't have to suffer under the surface's light.

Superhuman Strength
She is a peerless fighter. About 120 Thousand-Men Pins have been embedded in her body. These pins grant her superhuman strength, speed, and vitality. However, despite the pins granting her the cumulative strength of 120,000 men, even she can't put a scratch on Reg using her relic.

Trivia

 * While it's never outright stated, it's easy to read her attachment to Lyza as a little more than mere friendship. The way the woman is framed in her flashbacks is downright worshipful, and she's comically horrified when Lyza reveals that she intends to get married.
 * Her very character design fluctuates between panels. Sometimes she's drawn like a relatively normal woman, other times she's depicted with her cloak enveloping her entire body like a mass of darkness. She spontaneously develops a hunchback as frequently as she loses it. With all these aspects combined with her Nightmare Face, Ouzen would visually have more in common with a monstrous ghost than an actual human being. This is played with in the anime, where in one scene she switches from hunchbacked to straight posture with a sickening snap.
 * A side chapter reveals that she is an aficionado for alcohol. One of the ways to gain an audience with her is to gift her with exotic foods that would pair well with booze.