Arthur Wiki
Mr. Marco
Gender Male
Animal Moose (books)
Aardvark (cartoon)
Complexion Dark beige
Family Liam (unknown close family relationship)[1][2][3]
Job Teacher
Book debut Arthur's Eyes (book)
Cartoon debut "Arthur's Eyes"
Voiced by Walter Massey (s1-s18)

Mr. Marco is teacher at Lakewood Elementary School. He is Arthur's second grade teacher, and later goes on to teach a fifth grade class according to the class rosters posted in "Arthur's First Day."[4] He also seems to be the football coach as seen in "Arthur's Baby".

He is a kind teacher but doesn't tolerate any misbehavior from his students, and has zero-tolerance for cheating. According to the episode, "Arthur and the True Francine", he once punished Francine for copying off Muffy's paper during a math test, although it was later discovered that it was Muffy who cheated by copying off of Francine, and she was punished instead.


Mr. Marco cares a lot about his students and does his best to give them a good education. He can be very stern if somebody cheats in class. Despite knowing Francine well, he suspects her rather than the new girl Muffy of cheating, simply because Muffy makes an elaborate denial.

The desks in his classroom are usually separate from each other in rows and facing the front of the classroom (unlike Mr. Ratburn whose classroom has groups of four desks that allowed the students' desks to face each other).

Like the Brain, he is left-handed. He does have a playful side, and in "Double Dare" was revealed to be a fan of Dark Bunny.


Mr. Marco dresses similar to Mr. Haney. He wears a light sky blue jacket with a yellow cream shirt underneath and a tie. He also has light sky blue pants and brown shoes. His coaching outfit is the same color but consists of only a sweater and darker athletic pants with a white ball cap. In the early ''Arthur'' books, he was depicted as a moose with glasses, but the cartoon changed his appearance into an aardvark and removed the glasses.

Former students

Most of his students became Mr. Ratburn's students when they moved into third grade.






  • Mr. Marco's most prominent appearances were in Season 1, but he has appeared very rarely since then.
  • In "Arthur's Eyes", he has the same classroom as Mr. Ratburn, but in "Arthur and the True Francine" the walls of his classroom are purple and there are dinosaurs painted onto them.


  1. In "Crime and Consequences", they were seen together at least three times (see File:Liam seen with Mr Marco Crime and Consequences 1.png
    File:Liam seen with Mr Marco Crime and Consequences 2.png
  2. In "D.W. and Bud's Higher Purpose", they were seen twice.
  3. In "The Substitute Arthur", they were seen twice.
  4. File:Class List 1.png