4. Howard The Duck
They tried, they failed, let's move on. It was a very bold move by LucasFilm and Universal Pictures to make a movie about such an obscure comic book character and it just didn't work. Gosh, what am I even saying? This was never, ever, ever going to work. Howard is a duck from Duckworld who practises a martial art called Quack Fu. Unless you're targeting this towards a solely pre-adolescent audience it clearly isn't going to hit the spot. Sadly, this movie was given a PG rating and was generally aimed at a more adult audience, which was a very silly idea and resulted in the most awkward sex scene of all time. Please, Marvel, don't do this again.