Sameko

A dorsal fin rises from the top of her head and her teeth come to points, the clearest signs of the shark in her build. Beyond that she is a young woman with long dark hair, large round eyes, and a nose so slight it barely registers.

The series has not filled in much of her temperament. What her one appearance shows is a girl comfortable enough with Rumi Usagiyama to call her Ruko, polite enough to thank a stranger for directions, and quick to try to stop her friend from bolting toward a fight, though not quick enough.

Sameko studied at a Hiroshima hero school and befriended both Kameko and Rumi Usagiyama there. Her Quirk, unnamed in the series, hands her the attributes of a shark, though what it actually enables has never been detailed.

The three of them got lost in Osaka on a school trip while trying to reach the Tsutenkaku Tower. They happened across a young Taishiro Toyomitsu, who gave them the right directions before returning to his patrol, and the girls thanked him and prepared to carry on. Then Rumi caught the scent of a fight nearby. Neither Sameko nor Kameko could stop her before she leapt away toward it.