Czech marionettes, created in the 1920s and first spoken by Josef Skupa. After Skupa’s death in 1957 they were spoken and developed further by Miloš Kirschner. Since 1996 they are spoken by Martin Klásek, who was already alternating with Kirschner since 1974.
See also: Divadlo Spejbla A Hurvínka (Spejbl & Hurvínek Theatre)
Note: on many releases, the characters names “Spejbl & Hurvínek” are actually uncredited in this form as main artists.