Writer Greg Pak took over the series in 2006, leading the Hulk through several crossover storylines including "Planet Hulk" and "World War Hulk", which left the Hulk temporarily incapacitated and replaced as the series' title character by the demigod Hercules in the retitled "The Incredible Hercules" (Feb. 2008). The Hulk returned periodically in "Hulk", which then starred the new Red Hulk. In September 2009, "The Incredible Hulk" was relaunched as "The Incredible Hulk" (vol. 2) #600. The series was retitled "The Incredible Hulks" with issue #612 (Nov. 2010) to encompass the Hulk's expanded family, and ran until issue #635 (Oct. 2011) when it was replaced with "The Incredible Hulk" (vol. 3) (15 issues, Dec. 2011 – Dec. 2012) written by Jason Aaron with art by Marc Silvestri. As part of Marvel's 2012 Marvel NOW! relaunch, a series called "The Indestructible Hulk" (Nov. 2012) debuted under the creative team of Mark Waid and Leinil Yu. This series was replaced in 2014 with "The Hulk" by Waid and artist Mark Bagley.