Brewster plays Francesca "Frankie" Dart, a consultant hired to help shape things up at the underachieving school. David will appear as Elroy Patashnik, a retired scientist who comes to Greendale to reinvent himself.
Brewster is no stranger to Community fans, having played a different character, IT department staffer Debra Chambers, in the Season 5 episode "Analysis of Cork-Based Networking." Brewster's lengthy TV resume includes Criminal Minds (which she returned to last season for one episode), Friends, Andy Richter Controls the Universe, Huff and American Dad. More recently, she was seen on Drunk History and Key and Peele.
David recently played Sgt. Major Donald Cody on the short-lived critically acclaimed sitcom Enlisted (a show that, coincidentally, Yahoo also considered rescuing). As a voice actor, he narrated last year's The Bible and plays the Flame King on Adventure Time. His feature credits include Platoon and Crash.
David is also familiar to Community die-hards: He narrated the faux Ken Burns-style documentary at the center of the Season 3 episode "Pillows and Blankets." David has won two Emmys for voice-over work (for The War and Unforgivable Blackness: The Rise and Fall of Jack Johnson.)
Executive producers Dan Harmon and Chris McKenna have been busy at work on Community for several months now. Production on the Sony Pictures TV series' 13-episode sixth season begins on Nov. 17, and it will premiere exclusively on Yahoo in early 2015.