Dr. Slump and Arale-chan: Hoyoyo! City of Dreams, Mechapolis Children are lured to Metropolis only to find that the renowned, mythical city may not be the happy-go-lucky utopia they'd thought it would be. Details Casts Posters Title Dr. Slump and Arale-chan: Hoyoyo! City of Dreams, Mechapolis Release Date 1985-07-13 Runtime 00 Hours 38 Minutes Genres Comedy Animation Production Companies Unknown Production Countries Japan Mami Koyama... Arale Norimaki (voice)... Kazuko Sugiyama... Akane Kimidori (voice) / ... Kenji Utsumi... Senbei Norimaki (voice)... Mitsuko Horie... Obotchaman (voice)... Naomi Jinbô... Peasuke Soramame (voice)... Tesyo Genda... Suppaman (voice)... Mariko Mukai... Midori Yamabuki (voice)... Original Size (500x750)