Dr. Zimmer
Gender Male
Animal Bear
Hair color White (normally)
Orange (Buster's Dino Dilemma)
Gray (Arthur's Guide to Children's Hospital Boston and Fernkenstein's Monster)
Residence Shady Pines Retirement Home
Job Scientist, paleontologist, ogre-ism expert, entomologist, radiologist
Book debut Arthur and the Lost Diary
Cartoon debut "Buster's Dino Dilemma"

Dr. Zimmer[1] is a scientist who studies various subjects.


Dr. Zimmer, although not given by name, was the paleontologist in "Buster's Dino Dilemma" who informed Arthur and Buster about Dr. Marsh and Dr. Cope's study on their fossil.

He appears in "Sue Ellen Moves In" in Arthur's imagination where Sue Ellen is a spy for Ngngafajhg.

He visited Lakewood Elementary School in "Arthur's Lucky Pencil" to write equations on the chalkboard in Mr. Ratburn's classroom, but Brain, using the lucky pencil, was able to solve the equation before he had finished writing it.

He appeared again in "Sue Ellen's Lost Diary" in Francine's imagination explaining ogre-ism and why mean people should be kept separate from other kids. He has a German accent in "Sue Ellen's Lost Dairy," which references Albert Einstein, along with his uncombed white hair.

In "Fernkenstein's Monster", he is the old professor in Fern's story.

In "What is that Thing?", he plays tic-tac-toe with a robot in Arthur's daydream.

In "Strangers on a Train", he is a passenger on the Crown City Star.

As of "Buster's Garden of Grief," he is a resident at Shady Pines Retirement Home. He now uses a wheelchair.

He appeared as a radiologist on the Arthur's Guide to Children's Hospital Boston website.







  1. "I'm afraid your friend exhibits all the signs of acute ogre-ism."
    "Ogre-ism, Dr. Zimmer?"
    — Dr. Zimmer and Sue Ellen Armstrong, "Sue Ellen's Lost Diary"