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J.K. Rowling and the cast during "Harry Potter and The Deathly Hallows - Part 2" in 2011.
16 years have passed since Daniel Radcliffe appeared in "Harry Potter and the Sorcerer's Stone" with that lightning bolt-shaped scar on his forehead.
Since then, he's grown up, defeated Voldemort, and gone on to act in a bunch of other different movies.
The child actors in the "Harry Potter" movies have all transformed. Some of their acting careers have taken off after the series, and others are still trying to figure it out. There's no question though that the eight movies that came out between 2001 and 2011 have changed their lives forever.
Here's what the main child actors looked like when they were first introduced in the "Harry Potter" movie series, and what they look like now.