Yu Takeyama

Mount Lady (Ｍｔ．レディ) is a Pro Hero in Boku no Hero Academia.

Appearance
Mount Lady is a woman of average height with long blonde hair styled into two braids falling over her shoulders, and eyes with purple irises and white pupils.

Mount Lady's hero costume is composed of a unitard which is purple around her chest, belly and back, and also legs and forearms, and on the rest of her body. There are also orange stripes that separated the black and white parts, as well as around her neck and shoulders. She also has black gloves with the white lines at the end of the gloves. She has three white diamond shaped dots on the black part of her lower chest. She also wears a black domino mask with horn-like details on the sides.

Personality
Mount Lady is a young woman who seems to enjoy the attention that being a hero that gives her and she doesn't feel any remorse from having to take that fame from another hero while basking in the glory. However, she is not careless, as shown that she won't transform into her giant form in confined spaces in fear of destroying nearby buildings and she's careful when fighting a villain who has taken hostages.

Entrance Exam Arc
As Kamui Wood was about to restrain his opponent with his Lacquered Chains Prison move, Mount Lady suddenly interfered in his fight, attacking the villain with her Canyon Cannon move, and subsequently defeating it. She then introduces herself to the awestruck crowd, proclaiming it to be her first day on the job, and is afterwards greeted by photographers and paparazzi.

When Katsuki Bakugou is taken hostage by a villain, she is unable to do anything due to not having room to move around.

Ultimate Space & Jams Arc
She along with Kamui Wood were having trouble dealing with Vihara Headgear, as he was holding hostages. That was until All Might showed up and had beaten him and saved the hostages. Although she and Kamui Wood were grateful, they complained that he'll put them out of a job.

Sports Festival Arc
Mount Lady is seen outside the Sports Festival, having been assigned to guard security. She comments, while eating snacks, that all the professional heroes came to watch the event and notes that this year "is gonna be crazy".

After the rules of the Human Cavalry Battle are explained, Mount Lady, along with Kamui Wood and another hero discuss competition and cooperation in the Hero business. The other hero says that if a hero fails, they loose any chances of surviving, and notes that the Obstacle Race is a perfect example of how sometimes one has to lower someone else to show themselves off, and Mount Lady mentions that she felt bad for taking out Kamui Wood's enemy on her first day of work, also asking the other hero to stop smoking, while Kamui Wood agrees with the hero. Mount Lady then comments that sometimes heroes have to cooperate with their concorrents, and that the Human Cavalry Battle is a perfect analogy to that.

Quirk and Abilities
Gigantification - Mount Lady's Quirk allows her to grow to gigantic size. However, she can't adjust between her base-height and the height created via her quirk, making her only able to be 162cm tall or 2062cm.
 * Canyon Cannon (Move): Mount Lady performs a flying kick at her enemy. This move was first used to finish off an unknown enemy in Chapter 1.

Entrance Exam Arc

 * Kamui Wood & Mount Lady vs. Villain: Indecisive

Battle Trial Arc

 * Kamui Wood, Mount Lady & All Might vs. Vihara Headgear: Win