‘Adventure Time’ Welcome Guest Stars Neil Patrick Harris & Donald Glover October 24, 2012 Cartoon Network, News Cartoon Network’s Adventure Time is gearing up to kick off its fifth season on November 12th at 7:30 PM. Aside from an exciting return, the animated short will feature guest stars Neil Patrick Harris (How I Met Your Mother) and Donald Glover (Community). In the new season both stars are expected to show up in the 2013 episode “Bad Little Boy”. Harris will reprise his role as Prince Gumbell after appearing in the show’s third season with Glover set to portray the character Marshal Lee. The duo join the ranks of past guest stars that include Matthew Broderick (Ferris Bueller’s Day Off), George Takei (Star Trek), Donald Faison (Scrubs), Erik Estrada (Chips), Andy Milonakis (The Andy Milonakis Show), Emo Phillips (Home Movies), Bobcat Goldthwait (Jimmy Kimmel Live) and Susie Essman (Bolt). Actor Neil Patrick Harris brings with him credits that include ‘Doogie Howser M.D.’, ‘American Reunion’, ‘The Penguins of Madagascar’, ‘The Smurfs’, ‘The Best and the Brightest’, ‘Sesame Street’, and more. Donald Glover has appeared in ’30 Rock’, ‘The Misadventure of Awkward Black Girl’, ‘Regular Show’, ‘Our Deal’, ‘Bronx World Travelers’, ‘Human Gant’ and ‘Keyboard Kid’. Are you ready for more ‘Adventure Time’ with Finn and Jake? Leave us your comments below.