watch 01:48 The Loop (Movies) Do you like this video? Thunk is a character in The Croods. He is Grug and Ugga's son. Contents[show] Biography Beginnings Coming soon! In The Croods Coming soon! Personality Coming soon! Appearance Coming soon! Trivia Is the only male child of Grug and Ugga. Gallery Coming soon! Retrieved from "https://dreamworks.fandom.com/wiki/Thunk_Crood?oldid=63736" Categories: Characters The Croods Characters Males Heroes Humans Kids Sons Foolish Characters Silly Characters Teenagers Community content is available under CC-BY-SA unless otherwise noted.