Piotr Głowacki

as On

as Principal

as Kacper

as Kacper

as Paweł

as Karol

as Marcel Galiński

as Bruno Księski

as Mirek 'Miras' Kowalski (60 episodes)

as Principal

as Maciej Wojtal (1 episode)

as Captain Jerzy Majak

as Self (1 episode)

as Jan Habuda (2 episodes)

as Dariusz Kania (11 episodes)

as Ignacy Matuszewski

as Krzysztof 'Maras' Marczak (7 episodes)

as Administrator (3 episodes)