As proven by Thanos sacrificing Gamora, he's a being capable of love. While he may not have had affection for Nebula in her adult years, her growth and ability to fight with 100 percent of herself every time were enough for him to pay attention to her and try and "help" her to ensure she never lost again.
As a pirate and mercenary with her intentions set on conquering other empires, this daughter of Thanos is feared by many across the star systems. The fierce warrior Nebula is the adopted daughter of Thanos and the “sister” of Gamora.
However, Red Skull saw his true intentions, informing Gamora that Thanos was, in fact, weeping for Gamora, as he truly loved her as a daughter, and was heartbroken that he had to sacrifice her to get the Soul Stone. Disbelieving, Gamora could not comprehend that Thanos ever showed genuine love for her.
Thanos never cared much for Nebula, even going so far as to say in Guardians of the Galaxy that Gamora was his favorite. That could be because, to Thanos, Nebula was nothing more than a means to spare Gamora while still obtaining the Soul Stone.
Death is predominantly depicted as a skeleton cloaked in a black or purple robe, and at times appears as a Caucasian human female. A storyline in the title Captain Marvel showcases Thanos' scheme to conquer the universe, as the character becomes determined to prove his love for Death by destroying all life.
Over the years, Gamora became Thanos' favorite child, and he considered her the future heir to his throne, which only strengthened the growing wedge in her relationship with Nebula and in time, Gamora built up the reputation as the "deadliest woman in the galaxy" and became well known throughout the cosmos.
And OOOPS SURPRISE Thanos has to sacrifice "what he loves most" in order to get the stone. His tears imply that he loves Gamora, but in one of my favorite movie moments of all time, Gamora spits back at him, "This isn't love."
According to the theory, Thanos adopted Nebula with the intention of sending the two daughters to seek the Soul Stone and force Gamora to sacrifice Nebula. This would still allow him to get the Stone without having to pay such a steep price and would explain why he stoked such a resentment in Nebula.
Despite his claims that he wanted to make Nebula Gamora's equal, Thanos never wanted Nebula to win a fight. From the very beginning of the sisters' childhood with him, Thanos never meant for Nebula to be anything more than a plaything to torture or a lapdog to control.
But the one being Thanos hates more than anyone is the Merc With A Mouth himself, Deadpool – a rivalry that MCU fans are likely going to miss. While many fans may not expect this rivalry, Thanos and Deadpool have been at odds for quite some time.
The theory posits Ego, Odin, and The Ancient One as three of Thanos' greatest fears, and he waited until all of them were dead to make his move. This would make sense, as all of these characters were massively powerful and had strong ties to the Avengers, which meant they could be called in for backup at any time.
While audiences never got to see Quicksilver at full power, super-speed is one of the best abilities a hero can have when facing an enemy like Thanos. With enough training, Quicksilver would have been more than capable of defeating Thanos when he finally arrived in Infinity War.
Nebula's feelings on the death of Thanos are understandable, especially with the way Gillan broke it down in her quote. Despite his abusive nature, the Mad Titan was the only parent figure that the character has had for a long time.
Some time ago, Thanos killed Nebula's family and adopted her as a daughter, raising her to be a galactic warrior on his behalf. It is most likely that the Mad Titan had wiped out half her species, like he did with so many others, in his “noble” quest to bring balance to the universe.
As a youth, Nebula grew up in a torturous environment created by Thanos. Having the Mad Titan as a parental figure would have been bad enough, but she was also constantly compared to her surrogate sister Gamora. Thanos openly favored Gamora, which drove Nebula mad with jealous rage.
Over time, Nebula developed an obsessive need to best Gamora in combat, but every time she lost, Thanos subjected her to torturous mutilation, replacing parts of her body with cybernetic enhancements.
Thanos eventually realizes that all the trouble he went for in the snap: Killing Gamora, Killing Asgard's population, and ruining lives, have been for nothing. Thanos commits to finding a solution to reverse the snap. He starts to repair the gauntlet and confronts the Avengers.
Because she does not have a history with the Guardians, she does not reunite with them at the end of Endgame. Instead, she starts her own journey while Peter Quill is left mourning his dead girlfriend despite the existence of another version of Gamora in his universe.
A truly unusual event that even Marvel comics fans might have not expected, here is a glimpse into the unlikely romance of the Mad Titan and the Goddess of Death. A romance between Thanos and Hela seems something out of a Wattpad fanfiction, yet it did actually take place during one shocking Marvel Comics arc.
