<P> Miller appeared frequently as a member of the `` round table '' on Chelsea Lately . He appeared as Marmaduke Brooker in Carpoolers , which ran for 13 episodes on ABC in 2007 -- 2008 . In 2012 , he voiced Robbie Valentino on the Disney channel cartoon Gravity Falls . On December 13 , 2010 , October 28 , 2011 , and June 14 , 2012 , he performed stand - up on Conan . On November 15 , 2011 , his stand - up special No Real Reason premiered on Comedy Central . In 2011 , he hosted a special called Mash Up , which was picked up in 2012 for a full season by Comedy Central . He starred in the Fox TV series The Goodwin Games as Jimmy Goodwin . </P>
<P> Miller appeared frequently as a member of the `` round table '' on Chelsea Lately . He appeared as Marmaduke Brooker in Carpoolers , which ran for 13 episodes on ABC in 2007 -- 2008 . In 2012 , he voiced Robbie Valentino on the Disney channel cartoon Gravity Falls . On December 13 , 2010 , October 28 , 2011 , and June 14 , 2012 , he performed stand - up on Conan . On November 15 , 2011 , his stand - up special No Real Reason premiered on Comedy Central . In 2011 , he hosted a special called Mash Up , which was picked up in 2012 for a full season by Comedy Central . He starred in the Fox TV series The Goodwin Games as Jimmy Goodwin . </P>
who does tj miller play in gravity falls
who does tj miller play in gravity falls
Robbie Valentino
Robbie Valentino