- Makoto Tsumura
- Nello
- Sakura Tange
- Alois
- Shinobu Adachi
- Stephen
- Brady Bluhm
- Nello
- Brianne Brozey
- Stephen
- Richard Cansino
- Paul
- Christopher Carroll
- Art Store Owner
- Louise Chamis
- Nulette
- Lara Cody
- Young Paul
- Debi Derryberry
- Young Alois
- Mari Devon
- Jestas
- Jessica Evans
- Orphan
- Yuriko Fuchizaki
- Paul (Young)
- Dylan Hart
- Orphan
- Masato Hirano
- Hans
- Hikaru Ijûin
- Art Judge 3
- Yoshiko Kamei
- George (Young)
- Sophie Lechken
- Orphan
- Robert Loggia
- Grandpa
- Sherry Lynn
- Elina
- Alex Mandelberg
- Orphan
- Matsuo Matsuo
- Art Judge 2
- Michael McConnohie
- Cogetz
- Scott Menville
- George
- Matthew K. Miller
- Mr. Ike
- Eken Mine
- Mr. Jestas
- Randall Montgomery
- Hans
- Toshiyuki Morikawa
- George (Adult)
- Taeko Nakanishi
- Mrs. Nulette
- Yukimasa Natori
- Holland
- Ryan O'Donohue
- Young George
- Ken'ichi Ogata
- Art Store Owner
- Takao Ohyama
- Art Judge 1
- Kumiko Okae
- Elina
- Bob Papenbrook
- Ansole
- Bryce Papenbrook
- Orphan
- Yûko Sasaki
- Nello's Mother
- Ken Shiroyama
- (voice)
- Paul St. Peter
- Judge
- Honami Suzuki
- Alois
- Akiko Takeguchi
- Mrs. Jestas
- Kôsei Tomita
- Ansole
- Katsumi Toriumi
- Paul (Adult)
- Shigeru Tsuyuki
- Mr. Ike
- Clifton Wells
- Art Judge
- Akiko Yagi
- (voice)
- Kôsei Yagi
- Grandpa
- Kei Yamamoto
- Mr. Cogetz
- Sean Young
- Alois
