Nomes
| Versão Americana / Brasileira | Original Japonês |
| Harley Hoover | Tatsumaki Hitomi |
| Heather Kuroha Hobwarsh | Keiko Kuroha |
| Iggy Pig | Ton-chan |
| Kassê Carlen | Shuuhei Kokubu |
| Kassie Carlen | Karin Kokubu |
| Ken Carlen | Shinichirou Kokubu |
| Lance Romero | Kouichi Mizuno |
| Milton Massen | - |
| Enfermeira Nanako | Nanako Tateishi |
| Penny Round | Kaoru Hidaka |
| Petúnia | Buutan |
| Prudence Plumm | Masami Yamakawa |
| Professor Pholin Fatback | Makoto Arashiyama |
| Radford Tammack | Takura Mushanokouji |
| Super Pig | Buurin |
| Theodorix Pig | - |
| Três Porquinhos | Kobuta |