In 2000, Jenkins and Lee followed up their collaboration with another five issue Marvel Knights limited series, this time concerning The Sentry, a series Jenkins had unsuccessfully pitched to Marvel and DC Comics for a number of years. Although the mentally tortured hero was an original creation of Jenkins', Marvel ran a marketing hoax claiming that the character was a long-lost Silver Age creation of Stan Lee himself, even pre-dating the Fantastic Four. Several years later, Brian Michael Bendis reused the Sentry by making him a member of the New Avengers : Jenkins himself was featured as a character in the storyline which reintroduced the Sentry. Also in 2000, Jenkins given writing assignments in the mainstream Marvel Universe. In March, he was made the regular writer on "The Incredible Hulk". Like in much of his earlier work, Jenkins conducted a psychiatric examination of Bruce Banner, including a look at Banner's multiple Hulk personas. His 20 issue run on "The Incredible Hulk" ran until November 2001. During this same period, Jenkins became the regular writer of "". Taking over the title from issue 20, in August 2000, he wrote it until its end in August 2003. Marvel placed him on "The Spectacular Spider-Man" Vol.2, which Jenkins wrote for most of its three-year run, which paired him with artist Humberto Ramos.