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小栗旬 as Budori Gusukō (voice) |
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忽那汐里 as Neri Gusukō (voice) |
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佐々木蔵之介 as Kotori the Kidnapper (voice) |
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草刈民代 as Budori's Mother (voice) |
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林家正蔵 as Redbeard (voice) |
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林隆三 as Budori's Father (voice) |
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柄本明 as Narrator / Dr. Kūbō (voice) |
| Writing | 杉井ギサブロー | Screenplay |
| Visual Effects | 前田庸生 | Animation Director |
| Visual Effects | 江口摩吏介 | Character Designer |
| Art | 阿部行夫 | Background Designer |
| Art | 篠崎亨 | Conceptual Illustrator |
| Art | Hiroshi Masumura | Concept Artist |
| Sound | 小松亮太 | Original Music Composer |
| Art | 杉井ギサブロー | Storyboard Artist |
| Art | 小林治 | Storyboard Artist |
| Visual Effects | 江口摩吏介 | Supervising Animation Director |
| Directing | 杉井ギサブロー | Director |
| Writing | 宮沢賢治 | Novel |
