Mt. Lady

Yu is an ambitious and egotistical woman who enjoys the attention that being a hero gives her and doesn't feel any shame over taking that fame from another hero while basking in the glory. She is shown to be quite vain as she uses her ample sex appeal to further her popularity. This vanity also extends to shamelessness, as she isn't above making a lewd pun about her body or using her attractiveness to gain something. Yu has a fierce temperament, along with a propensity for pushing people's buttons, as she didn't hesitate to poke fun at Midnight during a talk show interview, something that led to a physical fight between the two while they were on air. She also appears to be very lazy, as during Minoru Mineta's internship, she forced him to do menial work instead of actually training him. She is shown to have a lecherous side as well, as seen when she takes an interest in Shoto Todoroki. Overall, while Yu means well as a hero, she is heavily drawn to achieving and indulging in her popularity, doing very little to hide her greed and love of fame. However, she is not careless, as she will not transform into her giant form in confined spaces in fear of destroying nearby buildings and risk harming civilians. She was also careful when facing a villain who had taken a family hostage. Despite her vanity, she has shown to be brave and selfless when the occasion calls for it, as she stopped Mr. Compress from reaching Izuku Midoriya's group after they saved Katsuki Bakugo, even though she was already severely injured from All For One's attack. She also protected a group of civilians from All Might's Detroit Smash shock wave during her debut. This shows that, despite her faults, she is serious about being a hero and does take her job seriously. She often uses slang and sarcasm often. Whilst she is a seductress she isn't too frisky, holds off at the last.

Yu is a curvaceous, young woman who has magenta eyes with white pupils and long eyelashes. with voluptuous breasts and large curvy butt, the greater of her two assets and , accentuated by her costume. She has voluminous, creamy blonde hair reaching down to her waist, with two shorter strands tightly curled to frame her face, parted slightly to her right.

Her first costume is composed of a purple and pale tan-colored skintight bodysuit, which is accented with orange stripes. The suit appears to have a pair of purple gloves with orange accents on the edge of the cuff. The design is similar for her "boots" which are cut off at the thigh in a deep v-shape. The suit also has three peculiar orange diamond-shaped dots on the purple top that are located under her chest, and she also wears a purple domino mask with horn-like protrusions on the sides. Her suit and mask, also have the ability to grow like her. She doesn't wear shoes when wearing her hero suit as they would break upon griwing, but her body suit does extent to her feet. When out of her costume, she'll usually wear casual modern clothes that still steal the eye.

Her abilities mostly rest on her Quirk, Gigantification, which allows her to grow to an absurd height She cannot variate between her base-height and the gigantified height achieved via her Quirk, making her only able to be either her normal height of 162cm (5 feet 4 inches) or her enlarged height of 2,062cm (67 feet 8 inches) tall. In her Giant form, she has strength enough to destroy entire factories with a single axe kick, or fight Titans of a similar size. She also has immense durability surviving the power of anair cannon aimed at her head, though it did knock her out for a time Yu is a prominent user of the seductive arts, using her looks to get what she wants. This was shown when she convinced a stand vender at the U.A. Sports Festival to give her free food. Despite not being shown using any strategy in combat, nor being very intelligent herself, Yu still proved that she is a hero that can grasp the context quickly. She can observe and understand what plan her allies are having, and provide any possible support at critical moments without being told beforehand

Ultimate moves: Canyon Cannon - While in her giant form, Mt. Lady performs a flying kick.

Titan Cliff - Mt. Lady grows into her giant form and obstructs the enemy, usually at the cost of herself.

She lives in Mustafu, Japan, and is a Pro Hero. Her house itself, is rather inconspicuous, considering her nature, but underneath, there is a giant underground facility, where she can train with her Quirk, which almost spans the whole town. She's the number 23. Ranked Hero but is definitely a rising star, she loves takoyaki.

She often works alongside Pro Heroes such as Kamui Woods, a wooden man capable of growing strong almost vine like wood from his arms rapidly to attack or ensnare opponents, who debuted around the same time, who sometimes criticises her nature, Death Arms, a burly man who with each consecutive punch gets stronger and Edgeshot a ninja esque man who can turn into fabric to sneak around, and slice through his opponents. All 4 of them are part of a hero team called the Lurkers All Might, a man with seemingly superhuman strength is the current number 1 Hero, and a Symbol of Peace that everyone reveres, with Endeavour the Flame Hero at number 2, though he isn’t so popular.

Mt. Lady is rivals with Older female hero Midnight, another seductress who secretes a pink gas trapped within her spandex, which puts to sleep those who inhale too much of it, works better on men.

Pro Heroes are occasionally asked to help teach at the UA Hero Academy... it's motto is Plus Ultra!

She's 22 years of age, her birthday is the 11th of August