Mysterious giant beings called "Ryū no Shippo" (Dragon Tails) appeared across the world. Due to the danger it could bring, the Keroro Platoon did a worldwide research on the Dragon Tails, but Tamama suddenly disappeared during the research. Because of this, the whole platoon started their search for Tamama and ended up in Mont-Saint-Michel, France where they met mysterious girl named Sion, who holds the mysterious Ryū no Hon (Dragon Book). But little they know about the secrets about her and the worldwide calamity that would destroy the entire world, as they know it...
Unfortunately the movie Sergeant Keroro The Super Duper Movie 4: Crushing Invasion, Dragon Warriors is not yet available on HBO Max.
| Directing | Susumu Yamaguchi | Director |
| Visual Effects | Takuya Sagawa | 3D Animator |
| Writing | Mine Yoshizaki | Comic Book |
| Production | Tsuguhiko Kadokawa | Executive Producer |
| Production | Kenji Uchida | Executive Producer |
| Writing | Hiroshi Yamaguchi | Screenplay |
| Art | Susumu Yamaguchi | Storyboard Artist |
| Directing | Takayuki Uragami | Director |
| Visual Effects | Takayuki Uragami | Key Animation |
| Visual Effects | Fumitoshi Oizaki | Character Designer |
| Visual Effects | Fumitoshi Oizaki | Animation Director |
| Visual Effects | Tsutomu Suzuki | Mechanical Designer |
| Visual Effects | Masahiko Itojima | Animation Director |
| Visual Effects | Masahiko Itojima | Key Animation |
| Visual Effects | Hatsue Nakayama | Animation Director |
| Visual Effects | Hatsue Nakayama | Key Animation |
| Visual Effects | Susumu Mitsunaka | Animation Director |
| Visual Effects | Susumu Mitsunaka | Key Animation |
| Visual Effects | Hitomi Takechi | Animation Director |
| Visual Effects | Hitomi Takechi | Key Animation |
| Visual Effects | Chie Nakazato | Color Designer |
| Visual Effects | Akemi Nagao | Color Designer |
| Art | Kenichi Tajiri | Art Direction |
| Camera | Takeo Gotou | Director of Photography |
| Visual Effects | Kenichi Suzuki | CGI Director |
| Sound | Yota Tsuruoka | Sound Director |
| Directing | Junichi Sato | Director |
| Visual Effects | Toshihiko Fukano | Key Animation |
| Visual Effects | Tsutomu Nishiyama | Key Animation |
| Visual Effects | Ryousuke Kimiya | Key Animation |
| Visual Effects | Makoto Iino | Key Animation |
| Visual Effects | Kenichi Takase | Key Animation |
| Visual Effects | Tamotsu Ikeda | Key Animation |
| Visual Effects | Satoshi Koike | Key Animation |
| Visual Effects | Kazuhiko Yabumoto | Key Animation |
| Visual Effects | Masakazu Sunagawa | Key Animation |
| Visual Effects | Kyota Washikita | Key Animation |
| Visual Effects | Masahiro Kurio | Key Animation |
| Visual Effects | Yuko Dangi | Key Animation |
| Visual Effects | Katsuhisa Yamamoto | Key Animation |
| Visual Effects | Shinya Uchida | Key Animation |
| Visual Effects | Yasuzo Iino | Key Animation |
| Visual Effects | Jimmy Stone | Key Animation |
| Visual Effects | Mariko Kawamoto | Key Animation |
| Visual Effects | Satoshi Mori | Key Animation |
| Visual Effects | Kanta Suzuki | Key Animation |
| Visual Effects | Misao Abe | Key Animation |
| Visual Effects | Emiko Kataoka | Key Animation |
| Sound | Otohiko Fujita | Musician |
| Production | Hiroshi Iijima | Production Assistant |