Paul Prickly is Peter Prickly's older brother, who is a Principal of a rival school which is similar to Third Street School. The school's name that Paul is the principal of is 98th Street School. He likes to make his younger brother feel inferior as he calls Pete "Half Pint." He can also act extremely rude and selfish. However, he does care and love his brother after they reconcile following an argument. He, along with several other characters from the series, makes a cameo in the double-length episode "Lawson and His Crew."
Father: Unknown father
Mother: Unknown mother
Brothers: Peter Prickly and Thurgood Prickly
Sister-in-law: Mrs Prickly
Friends: Miss Finster, Principal Prickly, Miss Grotke, TJ Detweiler, Vince LaSSao, Ashley Spinelli, Grethen Grundler, Mikey Blumberg, Gus Griswald, Randall Weems, Menlo, his 98th Street School and his 98th Street School students
Enemies: Earwin Lawson, Conrad Mundy, Greg Skeens, Chucko Kowalski, Jocko, Buster, Cheay, Koreo and Kurst the Worst
Likes: Behaving children and making sure troublemakers behave, particularly Lawson.
Dislikes: Misbehaving children, students cussing in class, students getting him arrested and toleraing Lawson and his friends' misbehaviour
The last movie reveals that he and Pete have another brother named Thurgood who lives in Alaska.It is unknown if
Thurgood is older or younger than Paul.
Since Paul is Peter's older brother, it can be inferred that he is in his early to mid-50's and that he was born in the early to mid-1940's.