Kyoka has a pragmatic, unenthusiastic and rude personality which is shown a lot to those she finds irritating, in particular her fellow classmate Denki Kaminari, who happens to be the most common target of her snarky comments. She also is notably prone to using her quirk to physically punish people or to keep them in line, notably Denki and Minoru Mineta.

Despite the fact that she comes off as cold and indifferent, Kyoka also has a much more sensitive side, being very defensive and empathetic towards her friends and others. Additionally, she is afraid of horror-based activities and has an aversion to nudity.