Beru Asui

Bell receives limited direct characterization, but she is presented as part of a functioning and affectionate family rather than a source of conflict for Tsuyu.

Her frequent work-related absences contribute to Tsuyu's early independence, though there is no indication that the arrangement is emotionally neglectful or hostile.

The Asui family's later appearances show continued pride in Tsuyu and interest in her development as a hero.

Bell possesses Frog, an amphibian Mutant-type Quirk related to the abilities seen throughout the Asui family.

Her appearance includes frog-like characteristics, but canon does not demonstrate the full range of abilities available to her.

It should therefore not be assumed that she can reproduce every application of Tsuyu's Frog Quirk, such as camouflage, long-range tongue attacks, or toxic mucus.

Bell is a civilian and has no established hero training.

Bell appears primarily through material explaining Tsuyu's family background.

She and Ganma frequently travel for work, creating circumstances in which Tsuyu becomes responsible for Samidare and Satsuki.

This experience contributes to Tsuyu's practical temperament, household competence, and tendency to act as a steadying influence among her classmates.

Bell later joins the rest of the family in watching Tsuyu participate in the climactic national conflict through live broadcasts.

Ganma Asui is Bell's husband.

Tsuyu Asui is Bell's eldest daughter.

Samidare Asui is Bell's son.

Satsuki Asui is Bell's youngest daughter.