PQ, a small, hand-sized spiritual advisor shaped like a round, blob-like creature with a face, serves as a steadfast companion to Parfait and Cacao. Charged with guiding holy virgins in their quest to locate the Fourth Warrior Ramunes, he offers spiritual expertise and tactical guidance during their missions. PQ delights in teasing Parfait with witty remarks, sparking playful retaliation that often sends him hurtling through the air, stretched thin, or flattened underfoot—a recurring dynamic during operations like infiltrating the Giga Genos spaceship and sabotaging its systems.

During Lemon’s rescue, PQ aids the group in navigating perilous terrain and evading relentless pursuers. He later assists in exposing the impostor Ramunes IV and preventing the activation of the catastrophic Dark Knight mecha. Undeterred by danger, PQ joins Parfait and Lemon in sneaking aboard the collapsing Giga Ginos, where they discover the injured Don Vodka and clash with Electone. Surviving the spaceship’s destruction, he escapes aboard an experimental mech to confront the Dark Knight.

In earlier franchise appearances, PQ functions as an advisor robot capable of summoning the Kaiser Fire mecha for protagonist Lamunade, enduring similar slapstick mishaps—like being pinched mid-combat—while maintaining his supportive role in battle. His presence remains a constant across missions, blending strategic insight with comedic resilience.