Ultrahéroe emerges as a fictional superhero crafted by Hiroshi Nohara within a specific film's narrative, designed for his manga project as a powerful, flamboyant defender. The character boasts a vibrant costume, flowing cape, and stylized hair, employing signature poses and catchphrases like "Pikapika Pikarin" during action, epitomizing a classic flamboyant superhero archetype.

Due to Hiroshi's creative efforts and the Buri Buri cult's unique circumstances, Ultrahéroe unexpectedly materializes in reality. This manifested entity engages directly in the conflict against the cult leader, deploying powers such as flight and energy-projecting "Pikarin" beams.

Ultrahéroe's presence functions as a narrative device underscoring Hiroshi's untapped creative potential and a thematic exploration of imagination and belief, directly aiding protagonists in neutralizing the cult threat. After resolving this conflict within the film, Ultrahéroe ceases to exist as a manifested being, reverting exclusively to Hiroshi's manga creation. The character appears solely in the 2005 film "Crayon Shin-chan: Densetsu o Yobu Buriburi Sanpun Pokkiri Daishingeki" and does not feature in any other seasons, movies, OVAs, or spin-offs.