An interesting piece of trivia. How did Nebula get Bucky's Vibranium arm? In the Guardians of the Galaxy Holiday Special, Nebula, who usually seems cold and emotionless, unexpectedly plays the role of a warm sister, placing the Vibranium arm that Rocket had long desired right in front of him. This action truly left the audience jaw-dropped. Although everyone has been able to tease Bucky a bit since he was redeemed, it shouldn't go as far as losing his entire arm, right? And the director confirmed that this was indeed the real deal. So what exactly happened ? Actually, there are a few explanations here. The first explanation is simply that she stole it . With Nebula's strength at that time, she could absolutely overpower a redeemed Bucky. The director didn't state it bluntly for fear that Bucky's fans would secretly shed tears. After all, he was once a member of Hydra and is Marvel's top male model. The second possibility is that Nebula used her connections to ask for a Vibranium arm from Wakanda. Everyone knows the Vibranium arm is a sophisticated, high-tech prosthetic. It certainly couldn't have been a success on the first try. There must have been some defective units or failed products. The third explanation. During his journey, the Winter Soldier has changed his arm several times. Nebula only received an older version that the Winter Soldier had upgraded from long ago. Actually, this explanation is the most logical and the answer fans want the most. So finally, the question is, do you know why the raccoon loves prosthetics so much?