Mari Ohara is very happy and cheerful. She makes jokes, and speaks with a slight accent. She, like Nozomi, likes grabbing her fellow idols' breasts as well, though it's not for punishment. She prefers working alone, and always keeps her chin up and willing to try new things.

Her voice is high pitched, and has strong vibrato. She squeaks on occasion. Her voice is very happy and cheerful. When talking, she is very energetic and happy, like her singing voice. She's always teasing her friends with a happy childish tone, but is also able to be calmer, though not as often. During reactions, she will be excited and happy and slightly unfocused, but will often make fun of a few things.