Movie
Description
Butt Detective is a super sleuth whose head resembles human buttocks, with eyes on each cheek and a cleft in place of standard facial features. This unusual anatomy is treated neutrally within his world, accepted as a natural aspect of his identity.

He solves mysteries through a polite and meticulous approach, employing logical deduction, careful evidence examination, and witness interviews. His investigations reflect a methodical and intellectually rigorous process. A signature tactical maneuver involves deploying a powerful blast of facial flatulence to subdue criminals, presented as a legitimate and effective technique.

He is often accompanied by Brown, a small dog who serves as a professional assistant. Brown frequently falls victim to the unintended effects of the detective's gaseous attacks. Butt Detective's backstory includes a former partner, Suisen. In a significant case, she sought his help regarding art forgeries at the Metropolitan Museum of Art and a secret society manipulating her teacher, Dr. Kinmoku. During this investigation, Butt Detective sustained a severe injury but persisted, demonstrating a commitment to seeing cases through even when forced to choose between personal loyalties and the truth.

He also confronted the villain Shiriarty, who orchestrated a series of crimes to steal a mysterious treasure known as the "O-PARTS" and plunge the world into darkness. To counter this threat, the detective collaborated with an investigator from the international police organization Wanterpol.

Another narrative arc involved the international crime syndicate "Kaitō Academy" (Phantom Thief Academy). While investigating a missing person connected to an idol contest on Stardust Island, Butt Detective went undercover as an idol. This mission involved an alliance with Phantom Thief U to retrieve the valuable Moonlight Stone and thwart a secret conspiracy called the Dark Age Plan. This storyline also revealed previously unknown information about Brown's past.

The character is known for his catchphrases, stating "Hmm, I smell a case..." and declaring "Pardon me while I 'poot' you in your place..." before incapacitating culprits.