Arthur Wiki
Aloysius Zimmerplotz
Aloysius Zimmerplotz
Gender Male
Animal Cat
Hair color Orange
Cartoon debut "D.W.'s Library Card"

Aloysius Zimmerplotz is a boy whose name is difficult to spell. After their preschool class has a field trip to the local library, Ms. Turner (the librarian) tells them that they can get library cards of their own but have to be able write out their full names. D.W. gets upset about this, since her full name is "Dora Winifred Read." The Tibble Twins point out that her full name is at least a lot easier to write compared to a name like "Aloysius Zimmerplotz." We then see Aloysius trying to write out his full name but running out of room on the piece of paper he was using.

Aloysius borrowed the book Chippy the Choo-Choo from the library.

Physical appearance[]

Aloysius is a cat with orange hair and yellow glasses. He has a red shirt and a white undershirt.

He has a resemblance to Beulah McInnerny.


Oh, no. I ran out of room again.

—Aloysius Zimmerplotz, when writing his name, "D.W.'s Library Card"

No! It's Chippy the Choo-Choo.

—Aloysius Zimmerplotz, when D.W. asks if his book is Hopalong The Frog, "D.W.'s Library Card"

Who's "Anonymous", anyway? Is he that geeky second grader with red hair?

Binky Barnes, "Don't Ask Muffy"