If you've spent any time at all as a fan of the "Game of Thrones" universe, you know just how tangled the character webs and family trees can get. That's especially the case when it comes to the Targaryens, the twisted, intermarried, royal family of dragon riders whose history is about to be further explored in the upcoming prequel series "House of the Dragon."

Based on George R.R. Martin's book "Fire and Blood," the series takes place centuries before "Game of Thrones" in an era of civil war among the Targaryens over a disputed succession to the Iron Throne. To help you keep track of who's who, we're breaking down the most important Targaryens you should know about. From the main characters of the new show to a refresher on how the Targaryen dynasty plays into "Game of Thrones" centuries later, keep this handy to help you keep track of all the major players.

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