They are wanted because it is believed that they are minions of Zoltab, even though it was them that imprisoned him. So Blart, Capablanca and Uther (who must help them as he is wanted for associating with Blart) must find and warn the other questors.
The individuals in question are being pursued because they are believed to be underlings of Zoltab, despite having been the ones who apprehended him. Consequently, Blart, Capablanca, and Uther (who is obligated to aid them since he is wanted for teaming up with Blart) must track down and notify the other questors.