watch 01:51 The Loop (TV) Do you like this video? Dan Butler (born December 2, 1954) is an American voice actor who provided the voice of Robert Simmons through the entire run of Hey Arnold! "Gee, this is harder than I thought."This article is a stub. You can help Nickipedia by expanding it. Retrieved from "https://nickelodeon.fandom.com/wiki/Dan_Butler?oldid=216493" Categories: Stubs Hey Arnold! cast members Real persons Males Voice actors 1950s births Americans Community content is available under CC-BY-SA unless otherwise noted.