Also known as
- Romaji
- Double Decker! Doug & Kirill: Extra
- Japanese
- 『DOUBLE DECKER! ダグ＆キリル』EXTRA
- Synonyms
- DOUBLE DECKER! DOUG & KIRILL EXDOUBLE DECKER! DOUG & KIRILL: Detective Buzz-Cut and the Steamy Murder Mystery Case!DOUBLE DECKER! DOUG & KIRILL: Infernal Unfair!DOUBLE DECKER! DOUG & KIRILL: The Daily Lives of the Seven Detectives!DOUBLE DECKER! Doug & Kirill: EXTRA