|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 is a scientist who studies various subjects.
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.
He appeared as a radiologist on the Arthur's Guide to Children's Hospital Boston website.
- 103b. Buster's Dino Dilemma
- 121a. Sue Ellen Moves In
- 202b. Arthur's Lucky Pencil
- 214a. Sue Ellen's Lost Diary
- 409a. What is that Thing?
- 804a. Fernkenstein's Monster
- 1105b. Strangers on a Train
- 1509a. Buster's Garden of Grief
- Arthur and the Lost Diary (1998)