Lose one friend, lose all friends, lose yourself.
He is perhaps best known for his comedic roles, most notably the underachieving elder brother Eric Matthews,on the long-running TV sitcom Boy Meets World from 1993 to 2000. More recently, he has voiced a number of animated characters such as Terry McGinnis, the titular character of Batman Beyond, Ron Stoppable of Kim Possible, The Blue Beetle in Batman the Brave And The Bold, and Doyle in The Secret Saturdays.
Friedle is best friends with actor Jason Marsden and was best man at Marsden's wedding in October 2004. The two have also worked together in numerous productions such as: Boy Meets World, Kim Possible, Batman Beyond, Batman the Brave And The Bold and Justice League Unlimited.
He is currently the voice of Lion-O in Thundercats 2011.