Tekken 2

You get to the end of Tekken 2 and the final boss is...wait, what? Kazuya?

You’ve got to be kidding, he’s one of the playable characters!

It's true, Namco was kidding us. After you trounce Kazuya, he turns into some sort of purple devil, launching himself in the air and firing lasers from his eyes—the first projectile in the series. This was the moment when the franchise went from being somewhat respectable with its interesting button-for-each-limb layout to going batshit crazy and it never looking back. Here’s to you, Devil Kazuya, for paving the way for a grizzly bear in a red shirt that can run the entire Mishima corporation.