In the underground Diamond Domain, where many Carbink live, the Mythical Pokémon Diancie serves as ruler. The Heart Diamond that sustains the land is beginning to fall apart, and Diancie is not yet strong enough to create a new one. While seeking help from the Legendary Pokémon Xerneas, Diancie encounters a group of thieves who want to take control of its diamond-producing power–and who awaken the Legendary Pokémon Yveltal from its cocoon in the process! Can Ash and his friends help Diancie discover its true power, stop Yveltal’s rampage, and save the Diamond Domain?
Unfortunately the movie Pokémon the Movie: Diancie and the Cocoon of Destruction is not yet available on HBO Max.
| Directing | Kunihiko Yuyama | Director |
| Writing | Hideki Sonoda | Writer |
| Writing | Satoshi Tajiri | Original Concept |
| Writing | Ken Sugimori | Original Concept |
| Writing | Junichi Masuda | Original Concept |
| Sound | Shinji Miyazaki | Music |
| Visual Effects | Kyoko Niimura | Animation Director |
| Visual Effects | Miyuki Sato | Color Designer |
| Visual Effects | Kazumi Sato | Supervising Animation Director |
| Visual Effects | Kazuaki Mori | Supervising Animation Director |
| Art | Kunihiko Yuyama | Storyboard Artist |
| Art | Seiji Mizushima | Storyboard Artist |
| Art | Yoshikazu Miyao | Storyboard Artist |
| Art | Hiromasa Amano | Storyboard Artist |
| Art | Jun Owada | Storyboard Artist |
| Art | Hiroaki Yoshikawa | Storyboard Artist |
| Art | Masahiro Sekino | Storyboard Artist |
| Visual Effects | Koichi Usami | Key Animation |
| Visual Effects | Takumi Yokota | Key Animation |
| Visual Effects | Ayumu Ono | Key Animation |
| Visual Effects | Akihito Aoki | Key Animation |
| Visual Effects | Katsuyuki Yamazaki | Key Animation |
| Visual Effects | Mizue Ogawa | Key Animation |
| Visual Effects | Reika Hoshino | Key Animation |
| Visual Effects | Fumiko Yoshida | Key Animation |
| Visual Effects | Katsuji Matsumoto | Key Animation |
| Visual Effects | Kyoko Niimura | Key Animation |
| Visual Effects | Ayano Shimizu | Key Animation |
| Visual Effects | Yuichi Nakazawa | Key Animation |
| Visual Effects | Yuji Ushijima | Key Animation |
| Visual Effects | Mayumi Nakamura | Key Animation |
| Visual Effects | Mika Tomiya | Key Animation |
| Visual Effects | Kazuhiko Udagawa | Key Animation |
| Visual Effects | Akira Ono | Key Animation |
| Visual Effects | Yasuko Takahashi | Key Animation |
| Visual Effects | Miwa Katayama | Key Animation |
| Visual Effects | Taka Satou | Key Animation |
| Visual Effects | Hitomi Ochiai | Key Animation |
| Visual Effects | Sadatoshi Matsuzaka | Key Animation |
| Visual Effects | Isao Nanba | Key Animation |
| Visual Effects | Rina Sugimoto | Key Animation |
| Visual Effects | Takuji Mogi | Key Animation |
| Visual Effects | Takaaki Wada | Key Animation |
| Visual Effects | Ryota Niino | Key Animation |
| Visual Effects | Hiroyuki Ochi | Key Animation |
| Visual Effects | Kyoko Matsubara | Key Animation |
| Visual Effects | Tsuyoshi Sakai | Key Animation |
| Visual Effects | Sae Ōba | Key Animation |
| Visual Effects | Shinsuke Terasawa | Key Animation |
| Visual Effects | Toshiko Baba | Key Animation |
| Visual Effects | Mai Kuwabara | Key Animation |
| Visual Effects | Shinichi Yoshikawa | Key Animation |
| Visual Effects | Chiaki Abe | Key Animation |
| Visual Effects | Motoaki Satou | Key Animation |
| Visual Effects | Toshinari Yamashita | Key Animation |
| Visual Effects | Mai Tsutsumi | Key Animation |
| Visual Effects | Koichi Taguchi | Key Animation |
| Visual Effects | Mariko Ishikawa | Key Animation |
| Visual Effects | Kaori Saito | Key Animation |
| Visual Effects | Tetsuya Hasegawa | Key Animation |
| Visual Effects | Tsutomu Nishiyama | Key Animation |
| Visual Effects | Kenji Hachizaki | Key Animation |
| Visual Effects | Eri Tokugawa | Key Animation |
| Visual Effects | Toshiharu Sugie | Key Animation |
| Visual Effects | Kazuhiko Yokota | Key Animation |
| Visual Effects | Satoru Iriyoshi | Key Animation |
| Visual Effects | Tadaaki Miyata | Key Animation |
| Visual Effects | Hideo Harigaya | Key Animation |
| Visual Effects | Takahisa Katagiri | Key Animation |
| Visual Effects | Etsuhito Mori | Key Animation |
| Visual Effects | Toshihiko Fukano | Key Animation |
| Visual Effects | Chie Mishima | Key Animation |
| Visual Effects | Ryousuke Senbo | Key Animation |
| Visual Effects | Shinichi Suzuki | Key Animation |
| Visual Effects | Hiromi Niioka | Key Animation |
| Visual Effects | Norihiro Matsubara | Key Animation |
| Visual Effects | Susumu Matsunaga | Key Animation |
| Visual Effects | Takahiro Kuroishi | Key Animation |
| Visual Effects | Kenji Kato | Key Animation |
| Visual Effects | Nozomi Tachibana | Key Animation |
| Visual Effects | Tsukasa Sorimachi | Key Animation |
| Visual Effects | Kana Miyai | Key Animation |
| Visual Effects | Sachiko Miyamoto | Key Animation |
| Visual Effects | Kazuhiro Ohmame | Key Animation |
| Visual Effects | Sayuri Ichiishi | Key Animation |
| Visual Effects | Masahito Sawada | Key Animation |
| Visual Effects | Hidetoshi Owashi | Key Animation |
| Visual Effects | Junpei Fukuchi | Key Animation |
| Visual Effects | Shuji Tanaka | Key Animation |
| Visual Effects | Kazumi Sato | Key Animation |
| Visual Effects | Ichirou Ogawa | Key Animation |
| Visual Effects | Kazuaki Mori | Key Animation |
