Kazimierz Wichniarz (The Deluge) Jan Onufry Zagłoba is a fictional character in the Trilogy by Henryk Sienkiewicz.

After meeting another character of the Trilogy, Jan Skrzetuski, Zagłoba, until now living a meaningless life of a petty noble, trying to survive by exploiting the good faith of others, becomes drawn into the company of hero-like personas, and slowly changes, to become worthy of their trust and friendship.

[1] He was balding and half-blind, known for his love of drinking and story-telling (usually glorifying his own exploits), tendency to poke fun at everyone and everything, later also renowned as a cunning tactician.

[7] Horst Frenz wrote that Zagłoba "belongs forever to the gallery of immortal comic characters of world literature, and he is thoroughly original.

This comparison, made by Dyboski[7] and others,[3][9] is often based on his propensity for drinking and partying, sharp tongue and cunning, and telling exaggerated tales of his youthful adventures.

[1] Unlike Falstaff, he grows to become a more mature character, and this transformation can be observed in the first book, beginning with the moment where he decides to risk his life to protect the proverbial damsel in distress, Helena, in the midst of the ongoing Chmielnicki uprising.

"William Lyon Phelps notes that if Zagłoba is a copy of Falstaff, he is as good as the original, a feat he applauds Sienkiewicz for.