|“||Drugs are bad. Mmkay?||„|
Mr. Mackey, Jr. is the elementary school's counselor at South Park Elementary, best known for saying "m'kay" at the end of most of his sentences. He also serves on the City Council as head of Public Health. His first name is unknown.
Mr. Mackey wears a green long-sleeved shirt, blue tie, blue jeans, and blue shoes. His hair is black, and thinning. He wears large, black-rimmed glasses. Mackey is well-known for his exaggeratedly large balloon head. It has been implied in "Ike's Wee Wee" that the size of his head is caused by the tightness of his tie. Yet, in "Child Abduction is Not Funny," his parents are shown to have the same condition. However, in "Proper Condom Use," his tie is removed before he and Ms. Choksondik have intercourse, and his head remains the same size.
Mr. Mackey is one of the few relatively sensible and level-headed adults in South Park. He has occasionally taught classes at the school and taught sex education with Ms. Choksondik. After her death, he took over the fourth grade class until Mr. Garrison returned. During a drug-education class, Mackey passes some marijuana around the classroom, and it was stolen (apparently by one of the children, though it is later revealed that the actual thief was Mr. Garrison). For this, Mr. Mackey is fired by the school, and evicted by his landlord, and, feeling depressed, he ends up taking drugs himself. He hates it when the children at the school defecate in the urinals, and has used at least seven different terms for the word "crap", including "mud monkey" and "chocolate corn/hot dog".