Principal Lang
Principal Lang
Gender: Male
Age: Unknown
Born: Unknown
Nemesis: Heinz Doofenshmirtz
Professional Information
  Principal of Danville High School
Friends and Family
Love interests:
Charlene Doofenshmirtz (formerly)
Mrs. Pierpoint (secretary)
Heinz Doofenshmirtz (new teacher)
Behind the Scenes
First Appearance:
  "Doof 101"
Last Appearance:
  "Doof 101"
Voiced by:
Gary Cole

"What in the bell?"
— Principal Lang

Principal Lang is the principal of Danville High School. He is seen in the episode Doof 101. He seems distrustful of having Dr. Doofenshmirtz to work in his school as a teacher. It is later revealed that he was an old college rival of Doofenshmirtz during the '80s, and was jealous when Doofenshmirtz had won the heart of Charlene at that time. Even when being told that both Doof and Charlene have been divorced, Lang refuses to abandon his grudge against Doofenshmirtz.

Background information