Pialé hails from the Fire Clan in the Land World. She acts as Princess Malta's companion and guardian of the Holy Flame. Pialé expresses deep affection for Malta, often declaring devotion like "Pialay loves Malta" in the third person. This devotion turns to jealousy towards Sirius due to Malta's romantic involvement with him, prompting Pialé to physically attack Sirius upon discovering their relationship.

Her intense loyalty drives key events. When Malta accidentally extinguishes the Holy Flame, threatening the Fire Clan's survival, Pialé urges Malta and Sirius to flee. She then performs a critical sacrificial act, offering her own body as kindling to reignite the Holy Flame, enabling their escape. This act costs Pialé her life. The resulting flame appears "sadder and lonelier" yet "more beautiful," a transformation immediately noted by the Fire Children and Queen Themis.

Pialé's motivations intertwine selflessness and possessiveness. By sacrificing herself to distract pursuers, she protects Malta's chance for happiness with Sirius, framing her final act as securing Malta's well-being. Her sacrifice briefly stalls the Fire Clan's pursuit, though Themis swiftly deduces the truth upon witnessing the flame's altered state.