<P> Francis , played by Christopher Masterson ( 119 episodes ) , is the oldest of the brothers , whom Malcolm often looks up to . It is revealed in the episodes `` Sleepover '' and `` The Bots and the Bees '' in season one that Francis was a breech birth , and in `` Flashback '' in season 2 , that Lois was in labor with him during her and Hal 's wedding . A rebel from birth , showing signs of Attention - Deficit Hyperactivity Disorder and Conduct Disorder , he was exiled to Marlin Academy by Lois for his behavior before eventually emancipating himself to run away from the Academy to work in Alaska , incurring his mother 's wrath . Upon moving to Alaska , he marries a local woman named Piama , who is about one year older than him , and had previously been married briefly , and whom Lois does n't like . In the series finale , Hal discovers that Francis has taken a job with Amerysis , and Francis admits he likes sitting at a desk sorting computer data . However , he also admits that he has no intentions of telling Lois about the job and enjoys torturing her by telling her that he 's still unemployed . </P>
<P> Francis , played by Christopher Masterson ( 119 episodes ) , is the oldest of the brothers , whom Malcolm often looks up to . It is revealed in the episodes `` Sleepover '' and `` The Bots and the Bees '' in season one that Francis was a breech birth , and in `` Flashback '' in season 2 , that Lois was in labor with him during her and Hal 's wedding . A rebel from birth , showing signs of Attention - Deficit Hyperactivity Disorder and Conduct Disorder , he was exiled to Marlin Academy by Lois for his behavior before eventually emancipating himself to run away from the Academy to work in Alaska , incurring his mother 's wrath . Upon moving to Alaska , he marries a local woman named Piama , who is about one year older than him , and had previously been married briefly , and whom Lois does n't like . In the series finale , Hal discovers that Francis has taken a job with Amerysis , and Francis admits he likes sitting at a desk sorting computer data . However , he also admits that he has no intentions of telling Lois about the job and enjoys torturing her by telling her that he 's still unemployed . </P>
who played the oldest brother in malcolm in the middle
who played the oldest brother in malcolm in the middle
Christopher Masterson
Christopher Masterson