Elena first appeared in *Popolocrois Monogatari II*, introduced to reflect Pietro's growth following his separation from his mother and create a sense of responsibility and familial expansion. She is the younger sister of King Pietro, belonging to the royal Pakapuka family of the Popolocrois Kingdom. Her background establishes her as a skilled warrior proficient in swordsmanship, capable of executing the "Kaze no Yaiba" technique to summon slicing winds against distant targets. In the 2003 anime series, Elena commands the airship Dakart, demonstrating leadership during maritime expeditions and participating in the search for the Lunar Drop, a relic capable of reversing petrification. When the Dakart is destroyed by a giant crab sent by antagonist Zephys, she confronts its loss. In the mobile game *Popolocrois Story: The Fairy's Flute and Narcia's Tears*, set years later, Elena is involved in Pietro and Narcia's wedding preparations, highlighting ongoing royal family obligations amid new threats on the Necrosia continent.