Sheena

Sheena (シーナ) is the former queen in the kingdom and the mother of Bojji.

Appearance
Sheena was an adult giantess with long and curly black hair. Bojji bears a strong resemblence to her.

Personality
Sheena was a caring mother who deeply loved Bojji, and is remembered fondly by the people who knew her.

Abilities
As a giantess, Sheena was extremely-physically powerful and a storied adventurer in her own right. Before marrying Bosse she was notorious for participating (and winning) in contests of strength with other adventurers.

She presumably had all of the traits of the giant race, including greater stature, immense physical strength, and immunity to poison.