Kurozumi Tama

O-Tama is a little girl from Kuri in Wano Country, whom Luffy met. she is also a retainer of the Kozuki Family.

Kozuki Family
O-Tama has great faith in the Kozuki Family, as she used their name as a mean to threat does who upset her.

Weapons
O-Tama was shown using a club against a member of the Beast Pirates.

Devil Fruit
O-Tama has eaten an yet unnamed Paramecia type Devil Fruit, which allows her to manifest eatable dango from her body, notably her cheeks.

Past
While at the market in Kuri, several members overheard O-Tama taking about the Kozuki Family and captured her.

Wano Country Arc
When Komacchiyo tried to free her, it was attacked and chased by Baboonmaru until they reached the beach where Monkey D. Luffy washed ashore after his crew got separated upon entering Wano Country. When the Beast Pirate caught up, they tried to capture Luffy as well, and called for reinforcement, but were defeated by him and O-Tama.

Afterward, O-Tama formally introduced herself to Luffy, and convinced Baboonmaru to join them as they want to her home. There, she made Luffy some rice, but when he asked for seconds, she informed him that that was all the rice, and excused herself the seemingly wash off.