Bryan Cranston Hal Actor, Executive Producer Frankie Muniz Malcolm Actor Jane Kaczmarek Lois Actor Christopher Masterson Francis Actor Justin Berfield Reese Actor Emy Coligado Piama Actor Keeley Karsten Leah Actor Vaughan Murrae Kelly Actor Kiana Madeira Tristan Actor Caleb Ellsworth-Clark Dewey Actor Ken Kwapis Director, Executive Producer Linwood Boomer Writer, Executive Producer Tracy Katsky Executive Producer Gail Berman Executive Producer Arnon Milchan Executive Producer Yariv Milchan Executive Producer Natalie Lehmann Executive Producer