Zbyshek was a citizen of Silver Skalitz.
Zbyshek was not particularly well liked by Henry, Fritz, Matthew or Matthias, but he was friends with Hans, even jumping in to attack Henry and his friends when they are caught throwing manure at the house of Han's father. It is implied that he is a bit of an outcast, explaining why he hangs around with Hans, who is treated with apprehension by the village for his German ancestry and his father's outspoken views.
During the attack on Skalitz by King Sigismund of Luxembourg, Zbyshek was able to escape, pushing Theresa towards the Cumans to create a distraction. She is captured and almost raped, but is able to get away, possibly thanks to Henry's intervention.
After the attack, Zbyshek was caught trying to loot the corpse of the butcher, but being held at bay by the Butcher's pet dog Mutt, who is defending his master's body. After being interrupted Henry, Zbyshek returned with Runt and his group of cutthroats, who nearly killed Henry. However, as Runt was about to finish him off, Theresa and Sir Robard of Talmberg arrived, scaring away the bandits.