Muniz also spoke about the upcoming reboot of the sitcom classic in a new interview
He's not going to be part of the return
The 39-year-old also shared an image of himself alongside co-stars Bryan Cranston and Jane Kaczmarek
The actor and racing driver made the candid admission on social media
The actor behind Malcolm from the popular 2000s sitcom gave an honest answer when asked about his on-screen brother
To be fair, he's basically Dewey's body double
Whether Erik Per Sullivan will return for the reboot has been confirmed
Erik Per Sullivan has pulled back from public life
Muniz hopes he can prove himself to those he works with
The child star turned his back on the bright lights of Hollywood at the height of his career
The child star revealed he spent a lot of time in Hugh Hefner's infamous LA home while growing up
The Malcolm in the Middle actor shared that Cranston was a father figure to him on the show
Frankie Muniz starred as the titular Malcolm in the sitcom
Frankie Muniz famously starred in the Emmy-winning sitcom Malcolm in the Middle
Muniz was just 11 when he starred in Malcolm in the Middle.
The star played Malcolm from the age of 13
The actor is heading into the jungle
Erik Per Sullivan has kept a low profile after playing Dewey in Malcolm in the Middle.
The Malcolm in the Middle star explained that his idea of what the show was changed after watching it
The Malcolm actor is all in for a reboot
The Malcolm in the Middle stars were overjoyed to see each other again
He's explained the truth behind the rumours
By spending less time in the limelight, Muniz has often found himself at the centre of bizarre online rumours