What does "in the Knight" mean in the following sentences? (Source: Princess Petunia's Sweet Apple Pie by Karen Poth)
At midnight, someone knocked at the door. It was Bump in the Knight. What could he want?
Does "It was Bump in the Knight" mean "It was Bump who wears a Knight costume" or "It was Bump who is a Knight"? What does "in" of "in the Knight" mean?