Cartoon Network has renewed its Monday night animated comedy series Adventure Time, Regular Show and MAD. Created by Pendleton Ward and executive produced by Fred Siebert, Adventure Time is in its second season and has now been greenlit for a third. Created by J.G. Quintel, Regular Show debuted in September 2010 and has been picked up for a second season. MAD, based on the DC Comics magazine, produced by Warner Bros. Animation and executive produced by Sam Register, also launched in September and has been renewed for a second season.