Marienthal's career started in Bay Area stage theater work, performing in
Missing Persons,
The Cryptogram,
Hecuba, ''
A Midsummer Night's Dream, Every 17 Minutes the Crowd Goes Crazy
, and The Life of Galileo''. He provided the voice of Hogarth Hughes in the 1999 animated film
The Iron Giant, which won him an
Annie Award for Outstanding Achievement for Voice Acting in a Feature Production. Marienthal also voiced the character
Robin (Tim Drake) in the
Static Shock episode "The Big Leagues", and reprised his role in
Batman: Mystery of the Batwoman. He played the title role of Tucker Pierce in the
Tucker television series, as well as
Steve Stifler's brother in
American Pie franchise and Sam in
Confessions of a Teenage Drama Queen. ==Filmography==