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.