There is no denying that all of the Mikaelson children are related to one another. After all, they're all impulsive, violent, and will do anything to protect their family. But which one of the siblings has a different dad?

Answer Klaus

We all know that Klaus is a hybrid, both a vampire and a werewolf. In fact, he was the first hybrid to ever exist. Many people questioned how this happened. And later on it was revealed that his mother, Esther, accidentally got pregnant by her secret werewolf lover. And the hybrid baby was Klaus.

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