Also, time itself passes much differently within the confines of the Marvel Universe than it does in the real world. Despite various characters having appeared within company publications for decades, few, if any, have aged to any appreciable degree. For example, the patriotic hero Captain America was created in 1941 but stopped appearing in titles soon after the end of World War II. The character was revived more than 20 years later, explained as having been frozen in a block of ice though believed to be dead, to lead Marvel's latest team of superheroes the Avengers. This first Avengers team featured several characters that would go on to be some of the company's most famous and most popular. Although the characters would be portrayed in hundreds and even thousands of adventures over the decades, they have been portrayed as having aged little or not at all.