Geniazinha, also known as Ilana in some localizations, emerges from the bottle discovered in the original 1969-1970 series. She is the daughter of the primary genie, Hakushon Daimaō, sharing his mystical vessel. Her summoning requires a nearby human yawn, compelling her to grant that person a wish. Unlike her father's clumsiness, she often twists the wording or intent of wishes, deliberately creating chaotic or unfavorable results.

Her story continues beyond the original series. In the 2001-2002 spin-off "Yobarete Tobedete! Akubi-chan," she bonds with the shy Koron Nemuta, whose embarrassed yawns frequently call her forth; her mischievous nature endures despite this companionship role. Later, in "Akubi Girl" (2006), she interacts with first-grader Ruru-chan, attempting to grant the child's wish for friendship with a classmate, highlighting her recurring intervention in human social connections.

A significant evolution occurs in the 2020 sequel "Genie Family 2020," set fifty years later. Depicted as more mature and responsible, she undertakes a journey to ascend to genie realm leadership. Accompanied by her newly introduced younger brother, Pūta—summoned by flatulence—she partners with Kantarō, grandson of the original protagonist. They navigate modern life, securing employment and exploring themes of dreams and responsibility. This iteration softens her mischief, emphasizing growth and a deeper grasp of human bonds, concluding with a forced separation echoing the original's bittersweet ending.

She also appears in the 2019 crossover film "Pandora and Akubi," partnering with Medusa from "Monster Strike" during a desert journey alongside other characters from Tatsunoko and Monster Strike franchises.