William B. "Willy" Dellmore

William B. Dellmore, called "Willy", by his childhood friend, Principal Prickly, is Brendan J. "Binky" Throckmore's 98th Street School counterpart and a Chief Justice who attended 98th Street School with Prickly, who then went under the name "Paulie".

At the end of "The Girl Was Trouble", the email Greta helps Prickly read is from Willy, who asks "Paulie" if he wants to have lunch together.

At the end of the episode "Buried Treasure", it is revealed that Prickly and Willy were some of the students who added their toys to the treasure before, when Prickly sees the discovery he immediately calls his friend at work to tell him that after forty years their treasure was finally found and that they hid it "pretty good".