Arale Norimaki is an android girl created by scientist Senbei Norimaki in Penguin Village. Originally designed for housekeeping assistance, she rapidly surpassed her programming to exhibit immense superhuman strength, speed, durability, and flight via jet propulsion from her feet. She resembles a young girl with spiky hair and large round glasses, typically dressed in a simple red Chinese-style outfit and blue cap.

Her personality radiates extraordinary naivety, curiosity, and perpetual cheerfulness. This childlike innocence leads to frequent misunderstandings of social norms and metaphors, causing unintentional destruction or comical mishaps when her unrestrained power meets literal interpretations of complex situations. Despite her artificial nature, Arale displays genuine emotions like affection, excitement, sadness, and stubbornness, deeply loving Senbei as her father figure.

Driven by a core desire to experience life as a normal child, she attends Penguin Village Elementary School. There, she forms friendships with classmates like Gatchan and Akane Kimidori while encountering rivals such as Suppaman and Obotchaman. Her engagement in typical childhood activities—playing games, eating dango, attending school—often escalates into chaos due to her powers or literal mindset. Her catchphrases include "N'cha!" and "Hoyoyo!"

Across various media, Arale's journey centers on navigating everyday life in the absurdly strange Penguin Village, encountering bizarre inventions, aliens, and phenomena. While she learns incrementally about human behavior and consequences, her fundamental innocence, boundless energy, and literal perspective remain unchanged, showcasing her unique android viewpoint.

Her abilities include effortlessly lifting massive objects, running faster than light, near-invulnerability, flight, energy projection like the "N'cha Cannon" from her mouth, enhanced senses, and rapid learning. She is powered by cola and maintained with vinegar. In the "Hello! Wonder Island" special, her adventurous spirit and curiosity drive enthusiastic exploration of the island's wonders and inhabitants.

Arale appears in crossovers with other franchises, maintaining consistent personality and powers. These encounters yield comedic contrasts or unexpected solutions to conflicts, sometimes defeating immensely powerful adversaries through unconventional strength and perspective. Her existence challenges perceptions of humanity and artificial intelligence through genuine emotions and simple desires.