Other students have described Ochaco as "the most laid back girl" among her class, being very bubbly and kind of an airhead at times. She is often incredibly blunt without being aware of it. Similar to Izuku Midoriya, Ochaco's reactions tend to be exaggerated and humorous: She often becomes amused at certain personality traits and quirks others exhibit, bursting into laughter at times, which she tries to suppress.

Ochaco is a very warm, lively individual who thinks about everything positively, though she is objective enough to see flaws and virtues. She is empathetic in general, friendly to those she meets, and will try to help or defend anyone who is kind to her or who needs assistance. Ochaco seems to be very good at reading people, understanding the reasons for Izuku and Katsuki Bakugo’s rivalry, and being the first to notice when the usually collected Tsuyu Asui was upset. Her empathy and kindness are also seen in how well she gets along with her classmates. She is on good terms with everyone and is particularly close friends with several members of the class, including Izuku, Tenya Ida, Tsuyu, and so on.

Despite her usually cheery and sometimes ditzy demeanor, Ochaco can take on an extremely determined, focused, and somewhat intimidating attitude when the situation calls for it. This side of her personality can come as a surprise to those who are used to her generally bubbly nature, and it tends to appear during competitive situations like the U.A. Sports Festival. While she is shown to be surprisingly strategic, she isn't above making some impulsive or reckless decisions. When it comes to her chosen path as a Hero, Ochaco is unwavering and dislikes being underestimated, even in the face of an overwhelming force.