Tenjou Poochi is an angel girl central to the narrative, featuring distinctive twin tactile sensations on her head. Her primary motivation is a dedicated quest to locate the "angel of destiny." She awakens the protagonist Takeru from sleep but is mistaken for a demon, leading him to attack her with his boomerang. This confrontation results in her becoming possessed by Super Zeus, who manifests through objects associated with her, including her skirt, balloons, and a goldfish.

Her vulnerability is shown when antagonists, the Baccarat sergeants, attempt to kidnap her using Pinzoloid's flower-headed lure. Takeru intervenes to rescue her, cementing their alliance and initiating their shared journey. She consistently uses the verbal mannerism "Takeru-kun."

Her relationship with Super Zeus evolves significantly. Initially a vessel for Zeus's possessions, she later witnesses Zeus's return to its original form during the story's concluding events, underscoring her role in facilitating divine interventions.

In the *Charging Card Game* tie-in, she contributes to gameplay as part of the "Sei Tenshi Flush" Toku Yaku. This special card combination requires her presence alongside Sei Tenshi Takeru and Kenshu Kanji to activate defensive or offensive bonuses during battles. Merchandise depictions, like PVC figures, consistently portray her with signature bunny-ear-like tactile appendages and youthful attire, aligning with her anime and manga visual design.

Her character arc concludes with participation in the "Holy Demon Olympics" alongside allies, where she aids in confronting overarching threats like the charismatic devil, reinforcing her transition to an active participant in the series' climactic battles.