Kája Berka (6 episodes, 1988-1989)
Ales Chvojka (6 episodes, 1988-1989)
Ing. Karel Krecek / Krecek (6 episodes, 1988-1989)
Radim Berka (6 episodes, 1988-1989)
Krecková / Vladenka Krecková (6 episodes, 1988-1989)
Magda Berková (6 episodes, 1988-1989)
Alice Krecková (6 episodes, 1988-1989)
Professor Berka (6 episodes, 1988-1989)
School Master (6 episodes, 1988-1989)
Tomás Krecek (6 episodes, 1988-1989)
Chvojková, mother / Chvojková - Mother (6 episodes, 1988-1989)
Burejsa - School Janitor / Burejsa, school janitor (6 episodes, 1988-1989)
Klára / Klára Marková (6 episodes, 1988-1989)
(6 episodes, 1988-1989)
Berka, grandfather (5 episodes, 1988-1989)
Great-grandmother Berková / Grandmother Berková (5 episodes, 1988-1989)
Director of MEGA Company / director of MEGA company (5 episodes, 1988-1989)
Ing. Berka - Father / Berka, father (5 episodes, 1988-1989)
Zedral (5 episodes, 1988-1989)
(5 episodes, 1988-1989)
Prof. Holzbach - Teacher / Prof. Holzbach - teacher (5 episodes, 1988-1989)
Teacher (5 episodes, 1988-1989)
Grandmother Berková (4 episodes, 1988)
Teacher (4 episodes, 1988-1989)
(3 episodes, 1988-1989)
Michal / Michal Kotys (3 episodes, 1988-1989)
Václavík (2 episodes, 1988)
Doc. Svácková, CSc. (2 episodes, 1988)
Prof. S. Jílek (1 episode, 1988)
(1 episode, 1989)
Václavíková (1 episode, 1988)
(1 episode, 1988)
Kovarík (1 episode, 1988)
School counsellor (1 episode, 1989)
Inspector (1 episode, 1988)
Hodková (1 episode, 1988)
News-vendor (1 episode, 1989)
Samánek (uncredited) (3 episodes, 1988)
Pupil (uncredited) (unknown episodes)