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Nebula is not the daughter of Thanos. Nebula is, in fact, an adopted daughter of Thanos, not a biological one. She is a member of the Zen-Whoberi race and was taken in by Thanos to serve as a weapon and a rival to Gamora, his other adopted daughter. Nebula and Gamora are often portrayed as sisters in a familial sense, but they are not related by blood. Thanos adopted them both to mold them into skilled warriors and assassins, with the intention of using them to further his own nefarious goals.

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Nebula is a Luphomoid assassin, an adopted daughter of the intergalactic warlord, Thanos and as well the adopted sister of Gamora.read more >>