The Marvel Cinematic Universe loves to tease its fans by leaving hints of what's to come lying around, from subtle foreshadowing to blatant post-credits stingers.
In most cases, the trail of breadcrumbs the comic book giant has left behind leads to a major reveal in the next movie, but there are also instances where certain Easter eggs have turned out to be herrings redder than Johann Schmidt's face.
With a decade's worth of continuity to weave together, the House of M's celluloid arm can be forgiven for allowing the occasional minor plot thread to dangle, but there are times when it was perhaps guilty of trolling the fans.
Marvel has hinted that certain heroes and villains may be at large in the MCU, yet failed to follow through on these nuanced teasers, leading to the conclusion that some of these Easter eggs are no more than empty promises wrapped in novelty packaging.
These teasers that ultimately went nowhere have been around since Phase One of the MCU, and they aren't going anywhere, and some of them were just plain misleading...