Let's see what you can see... This article is in need of images. Marshall Efron (born 1938) is an American actor. He also appeared in Bang the Drum Slowly, THX 1138, and The Smurfs. Voice roles Generation One Hun-Gurrr External links Marshall Efron at the Internet Movie Database Retrieved from "https://transformers.fandom.com/wiki/Marshall_Efron?oldid=443640" Categories: Articles in need of imagesVoice actorsEnglish voice actors Community content is available under CC-BY-SA unless otherwise noted.