Malcolm in the Middle is returning without Erik Per Sullivan - but where is the former child star now? After Disney+ picked up a revival series for Malcolm in the Middle, Variety confirmed that Per Sullivan would be recast. His character Dewey will be played by Caleb Ellsworth-Clark, who is taking over the role for the four-episode special. The rest of the cast including Frankie Muniz, Bryan Cranston, Jane Kaczmarek, Christopher Masterson and Justin Berfield are expected to reprise their respective characters.