TV-Series
Description
Eclair Ecleir Eicler is a Birdman resembling a Rockhopper penguin with blond hair. His penguin physiology dictates shuffling movements, requiring transport by one of his ten masked manservants for efficient navigation. He serves as assistant butler, maintaining the Great Tomb of Nazarick's 10th Floor during head butler Sebas Tian's absences. He performs cleaning duties with immense pride, frequently boasting his work leaves surfaces like toilets hygienic enough to lick.

Created by the Supreme Being Ankoro Mocchi Mochi, his personality settings intentionally harbor the desire to conquer Nazarick and sit upon its throne as a joke. Despite this programmed ambition, he maintains profound respect and loyalty toward the Forty-One Supreme Beings, acknowledging his creator's role. His aspirations are known within Nazarick but generally dismissed as harmless due to their origin. [citation:]

His activities across story arcs showcase his role and relationships. He oversees maintenance during Sebas Tian's absence and interacts with Demiurge. He attempts to console Shalltear Bloodfallen at the 9th Floor restaurant run by his acquaintance Sous-chef (nicknamed "Piki"), inadvertently deepening her guilt. Later, he tries to recruit Shalltear for his own conquest, citing betrayal as his "function," but fails. He is cuddled against his will by the Pleiades battle maid CZ2128 Delta, an encounter he finds humiliating and actively avoids thereafter. He undergoes maid training under Sebas Tian and Tuare. He comforts Ainz during a vacation. At a formal dinner, his self-congratulatory toast receives cold stares, and he becomes distressed when the Head Chef considers using penguins as ingredients. He also assists in preparations for the Sorcerer Kingdom's National Foundation Day Ceremony.

His combat prowess is negligible, rated at strength level 1, making him one of Nazarick's weakest inhabitants. His authority is strictly domestic, with no significant battle capabilities.

Relationships within Nazarick stem from his creator's ties to other Supreme Beings. He is close to Aura Bella Fiora, Mare Bello Fiore, Yuri Alpha, and Pestonya Shortcake Wanko, using nicknames outside work due to their creators' friendships. His dynamic with Shalltear combines sympathy for her past mind-control with opportunistic recruitment attempts. Sous-chef tolerates his familiarity, while CZ2128's affectionate cuddling causes him active distress. Despite his treasonous programming, his loyalty to Nazarick's hierarchy is unwavering, shown through deference to Sebas Tian and nervous retractions when challenging Ainz's authority.