John Nelson

Mr. Nelson is a supporting character in The Caillou Gets Grounded Show. He is Caillou's current teacher, as well as a staff member of Plotagon Elementary. He is known for getting mad at Caillou's shenanigans, and sending him to the principal's office.

Appearances

 * S1E10: Caillou Copies Off Of Leo's Test
 * S1E12: Caillou Installs A Virus On The School Computer
 * S1E16: Caillou Dresses Up As His Teacher
 * S1E19: Caillou Pulls Down His Teacher's Pants
 * S1E20: Caillou Posts An Inappopriate Picture Of His Teacher On Instagram
 * S1E22: Caillou Excludes Leo From A School Project
 * S2E7: Caillou Disrespects His Dad At School
 * S2E10: Caillou Misbehaves On The Last Day Of School
 * S2E13: Caillou Roasts & Debates With His Dad
 * S3E4: Caillou Misbehaves On The First Day Of School

Trivia

 * His full name is John Ray Nelson.
 * JakeAnimations is the original creator of Mr. Nelson.
 * Both Mr. Nelson and Mr. Lucas' names are John. They have also both been Caillou's teacher before.
 * He ressembles Mr. Lucas, Caillou's old teacher.
 * He has more appearances in the series than Caillou's Mom, Doris does.