"The Marvel Cinematic Universe may have popularized the use of post-credits scenes, but they've been around for decades. One of the earliest appearances of the post-credit scene, also referred to as a stinger, is from Night of the Living Dead. Its use picked up speed in the '80s and continued to gain momentum until the unstoppable freight train of superhero movies employed them to tease future entries. In truth, the stinger serves many purposes; some filmmakers use it to set up sequels, others as a wry fourth wall wink to the viewer, a punchline to an inside joke, or as a means of wrapping up loose plot threads. No matter the intent behind it, the post-credit scene delivers one final treat to those that stayed in their seats while the end credits played.
In a genre where evil rarely dies, it'd no surprise that horror has always remained at the forefront when it comes to applying the post-credit stinger."
