Sergeant Keroro Chibi Kero: Secret of the Kero Ball!? (2007)
- Genre:
- Release Date: 2007-03-17
- Runtime: 1h 36min
- Language: 日本語
- Production Country: Japan
- Directors: Nobuhiro Kondo, Susumu Yamaguchi.
- Writer: Nobuhiro Kondo
Tells of the adventures of a young Keroro and Giroro back on Keron when they get trapped inside a prototype Kero ball.
Unfortunately the movie Sergeant Keroro Chibi Kero: Secret of the Kero Ball!? is not yet available on HBO Max.
| Art | Kenichi Tajiri | Art Direction |
| Directing | Nobuhiro Kondo | Director |
| Writing | Nobuhiro Kondo | Screenplay |
| Directing | Susumu Yamaguchi | Director |