Ultra-Nyan's adventures continue. This time, he is tasked with finding the cause of the crows' sudden declaration of war upon the cats.
Unfortunately the movie Ultra Nyan 2: The Great Happy Operation is not yet available on HBO Max.
| Camera | Hideo Okazaki | Director of Photography |
| Art | Hiroaki Sato | Background Designer |
| Visual Effects | Takahiro Kishida | Key Animation |
| Sound | Osamu Totsuka | Music |
| Production | Shigeru Watanabe | Producer |
| Art | Kenichi Tajiri | Art Direction |
| Writing | Sho Aikawa | Screenplay |
| Directing | Hiroko Tokita | Director |
| Writing | Hiroko Tokita | Storyboard |
| Writing | Tetsu Kimura | Storyboard |
| Sound | Takeshi Ike | Original Music Composer |
| Visual Effects | Shinichiro Takagi | Character Designer |
| Sound | Takashi Ui | Sound Director |
| Production | Kazuo Tsuburaya | Executive Producer |
| Production | Shigeru Watanabe | Executive Producer |
| Production | Seiji Suzuki | Producer |
| Production | Takeshi Yoshida | Producer |
| Production | Tsuyoshi Yoshida | Producer |
| Visual Effects | Masahiro Andoh | Animation Director |
| Visual Effects | Masahiro Andoh | Key Animation |
| Visual Effects | Yuuji Ogata | Key Animation |
| Visual Effects | Takayuki Hamana | Key Animation |
| Visual Effects | Sanagi Fuyukoshi | Key Animation |
| Visual Effects | Kyoko Matsubara | Key Animation |
| Visual Effects | Kouji Matsuyama | Key Animation |
| Visual Effects | Yuzo Sato | Key Animation |
| Visual Effects | Noriko Ozeki | Key Animation |
