Jack Dawson
Who can forget Rose calling out for Jack while laying on a piece of rubble in the middle of the freezing ocean in Titanic. Jack Dawson made Leonardo DiCaprio very famous, and also led to millions of people believing that his story was one that actually happened on the real-life Titanic. A pure work of fiction, it’s often a shock to people that both he and Rose are not based on real people, but creations of brilliant writers who knew exactly what the audience would enjoy.
Sherlock Holmes
Because he is so commonly referenced in pop culture today, Sherlock Holmes is often mistaken for a real-life detective from years gone by. The beloved detective might have been based on a British surgeon called Joseph Bell, but as it turns out, he has never existed in real life. Author Arthur Conan Doyle, who brought the character to life, has never suggested that he was a historical figure, in spite of him becoming one thanks to his widespread popularity.