Caveman When Mordecai and Rigby meet a caveman, they decide to put his unique prehistoric physique to good use: chugging cheese! But could this caveman actually turn out to be a Neanderthal nuisance? Details Casts Videos Galleries Posters Season Lists Title Caveman Genres Animation Comedy Release Date 2013-02-25 Episode Runtime 00 Hours 11 Minutes Season Number 4 Episode Number 20 Production Companies Cartoon Network Studios J.G. Quintel... Mordecai / Hi Five Ghost ... William Salyers... Rigby (voice)... Mark Hamill... Skips (voice)... Sam Marin... Benson / Pops / Muscle Ma... Roger Craig Smith... Thomas (voice)... Regular Look at Regular Show (Clip) Original Size (1920x1080) Original Size (1280x720) Original Size (3840x2160) Original Size (1920x1080) Original Size (3840x2160) Original Size (3840x2160) Original Size (3840x2160) Original Size (3840x2160) Original Size (3840x2160) Original Size (3840x2160) Original Size (3840x2160) Original Size (1600x900) Original Size (1280x720) Original Size (1920x1080) Original Size (2973x1673) Original Size (1920x1080) Original Size (1920x1080) Original Size (1920x1080) Original Size (1920x1080) Original Size (3840x2160) Original Size (3840x2160) Original Size (3840x2160) Original Size (3840x2160) Original Size (1920x1080) Original Size (1920x1080) Original Size (1000x1500) Original Size (2000x3000) Original Size (1000x1521) Original Size (2000x3000) Original Size (2000x3000) Original Size (2000x3000) Original Size (2000x3000) Original Size (1708x2562) Original Size (680x1000) Original Size (641x938) Original Size (2000x3000) Original Size (960x1440) Original Size (1708x2562) Original Size (667x1000) Original Size (1000x1500) Original Size (552x827) Original Size (680x1000) Original Size (832x1280) Original Size (600x900) Original Size (1200x1800) Original Size (2000x3000) Original Size (1708x2562) Original Size (1708x2562) Original Size (1856x2644) Original Size (667x1000) Original Size (2000x3000) Original Size (1200x1800) Original Size (720x1080) Original Size (720x1080) Season 1 12 Episode(s) 2010-09-06 Season 2 28 Episode(s) 2010-11-28 Season 3 39 Episode(s) 2011-09-19 Season 4 40 Episode(s) 2012-10-01 Season 5 40 Episode(s) 2013-09-02 Season 6 31 Episode(s) 2014-10-09 Season 7 36 Episode(s) 2015-06-26 Season 8 31 Episode(s) 2016-09-26