Kiefer

Kieper is a tomcat, who is in the fourth grade at Lakewood Elementary School. He is a member of the Tough Customers.

Appearance and Personality
He is depicted with a cream complexion and very short clumps of hair. He wears a red shirt with a horizontal yellow stripe and yellow cuffs, a black sleeveless biker jacket, dark gray jeans, and red and white high-top sneakers.

He is often a member of Binky's team in sports that opposes Arthur's team, such as in roller hockey. His reputation is often harsh and he would get into various fights with people. From time to time, he wrestled with Rattles. He has also been mean to Arthur, such as grabbing at his sweater.