Paweł Wawrzecki

as Leonard Bułkowski (11 episodes)

as Self

as Zenon Kowalski (44 episodes)

as Mr. Władzio

as Dyrektor Szkoły

as Professor

as dr Roman Kidler (49 episodes)

as ojciec Piotra i Dawida

as Doktor Roman Kidler (167 episodes)

as Roman "Buła" Bułkowski (44 episodes)

as doktor Lucjan Kidler (30 episodes)

as Willy Berger

as Wiesiek Gabriel

as Roman "Buła" Bułkowski (57 episodes)

as UOP Agent #1

as Paweł

as adwokat Korczak, kolega Krzysztofa Janickiego (1 episode), as Korczak (12 episodes)

as adwokat Grzesio, "przyjaciel" Romana

as Zbyszek

as Singer