Frankie Muniz stars as the title character Malcolm, and he is joined by Jane Kaczmarek, Bryan Cranston, Christopher Kennedy Masterson, Justin Berfield and Erik Per Sullivan.

[23][24] Main cast members Frankie Muniz, Jane Kaczmarek, Bryan Cranston, Christopher Kennedy Masterson, Justin Berfield and Erik Per Sullivan return as Malcolm, Lois, Hal, Francis, Reese and Dewey respectively.

[30] Josh Wolk wrote for Entertainment Weekly, "The inevitable reality of aging child stars is unfortunate, as Malcolm still amazes with vibrant comic creativity.

"[32] The episode "Dewey's Special Class" won the Primetime Emmy Award for Outstanding Choreography.

He wrote, "The way privacy is belittled by the characters involved simply won't fly well today, especially in a school setting."