Hanna Suiryu (known internationally as Hanna Suiro) is the younger sister of Bashara Suiro. She possesses fair skin, blue eyes, and distinctive orange hair usually secured in a messy bun by a pink flower clip. Her outfit combines a neon yellow long-sleeved hoodie under a lavender jacket featuring blue-violet buttons, a lightning design, and green sleeves. She pairs this with a black skirt, turquoise socks, and spring-green shoes sporting neon purple toe-caps and pink laces. A blue scrunchie frequently adorns her left wrist.

Her personality contrasts sharply with her brother's, marked by a stronger sense of adventure and greater enthusiasm for exploration and challenges. She displays a mischievous streak, notably tricking Ranzo into calling himself "annoying" or "humble" by exploiting his struggles with Japanese. Alongside this playfulness, she demonstrates consistent care and loyalty towards friends and family. For example, she and Ranzo were the only ones to check on Bel after Belfyre's destruction, and she defended Bashara against negative comments during his livestreamed battle.

In the Japanese release of Beyblade Burst QuadDrive, she appears in every episode, the only side character to do so. This consistent presence continues in international releases, where she is one of four such characters alongside Valt Aoi, Bashara Suiro, and Jinemon Daizora. Her involvement extends into Beyblade Burst QuadStrike, with confirmed appearances in its first five episodes, including storylines involving the Abyssal Tournament.

Family relationships are central to her character. She shares a close bond with her brother Bashara, especially early in QuadDrive, and is the daughter of Moné Suiro, maintaining a strong connection with her. Beyond family, she forms a significant friendship with Pri Forsythe, inviting her for sleepovers and expressing excitement upon meeting Pri's brother, Pax. She is also a member of the Sunbat United team.