Headmistress Thornberry is one of the school staff in The Mouse Avenger's GMD fanfiction stories. Voiced by Wanda Sykes, Headmistress Thornberry is nice when children behave & mean when they misbehave.

Headmistress Thornberry, the principal at Basil Of Baker Street Grammar School

Full Name

Nicole Marianne Thornberry

Other Names

Principal Thornberry

Date Of Birth / Birthplace

September 24, 1849 / Dover, Delaware, USA





Voice Actor

Wanda Sykes

Height / Weight

4 inches, 75 centimeters / "130 oz."


Principal of Basil of Baker Street Grammar School

Marital Status

Married (to Bryant Thornberry); heterosexual



Too many parameters

Appearance Edit

Tall, & slender, but very muscular. Has chocolate-brown fur, platinum-blonde hair in a bun, tough grey eyes, curvy pink ears, rough carpenter's hands, a long tan tail, & little crimson lips. Wears a sleeveless gray dress, square sunglasses with silver rims, black stockings, & shiny black fashion boots.

Family Edit

  • Steven Thornberry (father, deceased)
  • Pamela Thornberry (mother, deceased)
  • Amelia Thornberry (daughter)
  • Paul Thornberry (son)
  • Clover Thornberry (daughter)
  • Dean Thornberry (son)
  • Larry Thornberry (son-in-law)
  • Annie Thornberry (granddaughter)

Biography Edit

To be announced.

Fursonality Edit

Kind, generous, hardworking, intelligent, studious, caring, sometimes fearful, can be mean when she's angry.

Fursonal Information Edit

Likes Edit

To be announced.

Dislikes Edit

To be announced.

Talents, Skills, & Abilities Edit

Is an excellent principal & grandmother.

Pastimes & Hobbies Edit

To be announced.

Prized Possessions Edit

To be announced.

Favorite Things Edit

To be announced.

Whereabouts & Frequent Haunts Edit

At Basil Of Baker Street Grammar School.

Particular Habits Edit


Nicknames, Pet Names, Aliases, & Alternate Monikers Edit

Principal Thornberry.

Health Problems / Disabilities / Illnesses Suffered Edit


Extracurricular Edit


Noted Accomplishments Edit


Fanfics Featuring Headmistress Thornberry Edit

More to be announced.

Memorable Quotes (& Exchanges Of Dialogue) By Headmistress Thornberry Edit

  • "Hello, Martin. What brings you here today?"
  • "Martin Alexander Frisby! I can't believe what you did! That's it! You are expelled for 2 weeks, & I will call your family! Go home now!"
  • "So, Martin, why are you in my office?"
  • "Martin! You know you're not supposed to cuss in school! That's it! You are suspended for 5 days! Go home now!"
  • "Larry and Amelia! Aren't you ashamed of grounding my granddaughter Annie? That is it! You are grounded, grounded, grounded, grounded, grounded, grounded, grounded for 1 single week, starting today!"
  • "Annie, you are ungrounded, which means you are not grounded. Now you can go play with your friends."
  • "Isn't this the happiest day of my life?"

Songs Performed By Headmistress Thornberry Edit

To be announced.

Gallery Edit

To be announced.

Character Modeling History Edit

  • Marianne Thornberry ("The Wild Thornberrys")

References Edit

To be announced.

External Links Edit

To be announced.