Karui is a dark-skinned kunoichi with long red hair and amber eyes. She wears a long, short-sleeved dress with frilly edges complete with the Kumogakure flak jacket, two simple yellow earrings, fishnet stockings, thigh-high boots with white soles and a forehead protector which she wears like a bandanna. She also carries a long sword on her back.
Karui seems to have a somewhat comedic negative relationship with her team-mate, Omoi. During their debut, they argued over the possible reasons that they could have been called by the Raikage. She assumed that he wanted them to get him more protein shakes. However, the argument started with Omoi implying that she is flat-chested in comparison to their team-mate, Samui. Like the rest of her team, she highly respects Killer B and was unfaltering in her pursuit for revenge against Sasuke.
Karui is also quite outspoken and allows her emotions to come out, as she angrily yelled at Team Kakashi for allowing the renegade Sasuke to run loose. She came to a violent point when she took out her rage on Naruto Uzumaki and beat him without hesitation.
Karui can be considered a very skilled kunoichi as she was trained by Killer B and was personally summoned by the Raikage to gather information about his abductor. She has shown to have great teamwork skills as she was able to coordinate attacks with her partner Omoi without having to communicate with each other. She is also very skilled in taijutsu and seems to possess some level of physical strength as she was also able to severely bruise Naruto Uzumaki's face after punching him in the face for quite some length of time.
In terms of fighting style, Karui relies mainly on kenjutsu, wielding a long katana in battle. She has demonstrated the use of the Cloud-Style Front Beheading technique which is a simple frontal slash but was effective in defeating several of the White Zetsu Army clones.
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