QUIZ: Can you guess the celebrity based on their real name?
Stage names - whether you're an actor or a musician - are just as important as every other aspect of a celebrity's identity.
Some of them are lucky enough to be given a kick-ass name at birth (Denzel Washington was always Denzel Washington, because of course he was born with the greatest name in existence), but others had to change theirs once fame approached, for whatever reason.
Did you know, for example that Michael Keaton - aka Batman, Birdman, Beetlejuice, etc - was actually born Michael Douglas? But because there already was a Michael Douglas in Hollywood, he had to come up with another name.
These start off easy enough, but they do get progressively harder as they go on, so if you're not sure of one, just skip on to the next one. 15 names in 3 minutes.
With that in mind, we will give you one piece of advice: if you're stuck, try saying the name out loud...