Harry Potter: What If Harry Was The Villain? - 7 Ways It Would Have Changed
2. He Would Be Voldemort's Puppet
When you really think about it, Harry's story is quite a tragic one, and he could have easily turned to the dark side from a young age if he wanted to.
His parents died a horrible death and he was lied to about it by his verbally and mentally abusive aunt and uncle, everyone that he knows and loves dies around him throughout the series and everything he does gets recorded by the press like he's some kind of Kardashian - it's a wonder that he wasn't a homicidal maniac.
In Harry Potter and the Chamber of Secrets, Harry confides in Tom Riddle's diary as a way of escaping his everyday dramas. Voldemort could have used this in a way that made him a father figure to Harry, and in turn manipulated Harry into trusting him.
He could have then used this tactic to kill Harry in the end, instead of attempting to kill the boy once a year by being a blatant Hitler for 7 years.