James Urbaniak

James Christian Urbaniak (born September 17, 1963) is an American character actor. He is best known for his roles as Simon Grim in three Hal Hartley films: ''Henry Fool'' (1997), ''Fay Grim'' (2006) and ''Ned Rifle'' (2014), Robert Crumb in ''American Splendor'' (2003), Dr. Thaddeus "Rusty" Venture on the animated series ''The Venture Bros.'' (2003–2023), Grant Grunderschmidt on ''Review'' (2014–2017), and Arthur Tack on ''Difficult People'' (2015–2017). Provided by Wikipedia