Mt Lady | Gulped but not forgotten

Yu Takeyama, also known as the Mountain Hero: Mt. Lady, is the current No. 3 Hero, a former No. 23 Pro Hero, and member of The Lurkers.

Yu is an above-average height young woman of fair skin and curvaceous frame. She has magenta eyes with white pupils and long eyelashes. 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 skin-tight 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.

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.[10] 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.

Following All Might's retirement and Endeavor taking stand as the new No. 1 hero, Yu appears to have taken a more serious standing to her job as a hero rather than just being focused on the attention she receives, as noted by Minoru. Shota Aizawa claims that this is the effect Endeavor's uprising has had on many Pro Heroes. Yu herself even tells Class 1-A that people have had enough of the celebrity aspect of heroes and wish to see them do their jobs in earnest. Furthermore, unlike her comrade Death Arms, she didn't quit after the Paranormal Liberation War in spite of the rising hatred against heroes, assisting in the operation to track down All For One and demonstrating her commitment.