Shakty acts as research assistant to Dr. Takeshi Aikawa, supporting his archaeological investigations into ancient Indian mythology and Princess Surya. Born in India as Irene Adolfo to English parents, she received the nickname "Shakty" from Dr. Aikawa, referencing sexual potency. Her primary role involves instructing Dr. Aikawa's grandson, Ryu, in Kama Sutra techniques to prepare him for a destined relationship with Princess Surya. This training occurs in a bathhouse setting where she playfully pinches him. She also maintains an ongoing sexual relationship with Dr. Aikawa within the manga narrative, though the anime adaptation omits this dynamic.

Shakty participates in key actions during the quest for the Sex Grail. She accompanies the group to retrieve the artifact from Khajuraho Temple and later joins the ritual using its counterpart, the Cup of Death, at Lakshmana Temple. This ritual requires a foursome sexual position with Dr. Aikawa, Yukari, and Hige Godzilla to access Shambhala. Her characterization emphasizes sexual confidence, reflected in her nickname's origin and her mentorship of Ryu. She exhibits playful behavior, such as throwing Ryu a donut during kendo practice. Her narrative involvement lessens following Surya’s rescue and the group's return from Shambhala.

Adaptation differences exist: the manga explicitly depicts her as Dr. Aikawa’s lover, while the anime minimizes this aspect. Her participation in the foursome ritual appears in both versions, though her overall role becomes less prominent in later story stages.