Jerzy Janicki (played by Jerzy Stuhr) is a protagonist in Decalogue X.
Brother obsessed with a valuable stamp collection inherited from his father. Artur Janicki (played by Zbigniew Zamachowski) is a protagonist in Decalogue X.
Brother of Jerzy, equally consumed by the inherited stamp collection. Stamp Store Owner (played by Henryk Bista) appears in Decalogue X.
Vendor in Decalogue X, facilitates stamp transactions. Jerzy's Wife (played by Elżbieta Panas) appears in Decalogue X.
Spouse of Jerzy in Decalogue X.