In Guardians of the Galaxy 3, everyone has received different levels of upgrades, the biggest of which is Nebula, in addition to softer appearance, Nebula also gets a new mechanical prosthesis, and using the MCU's most advanced nanotechnology, it can transform into any desired shape.
Due to the deformability of this new arm, the first reaction of many fans to see it is to associate it with the nano armor of Iron Man in "Avengers 3", and even many people believe that this new arm was created for Iron Man.
However, if we carefully review the plot of "Avengers 4", we will know that although Iron Man and Nebula have been getting along in space for a while, as of Iron Man's finger sacrifice, Nebula is still an ordinary robotic arm in "Avengers 4".
After Tony's sacrifice, it is even more impossible to build a new arm for Nebula, so who is the maker of Nebula's nanoprosthetic limb? The roller revealed the answer in an interview with the media - it was the rocket raccoon.
Rolling director said that in the five years of the extinction, Rocket and Nebula became the only surviving members of the Guardians of the Galaxy, and the two became dependent on each other, and we can see many plots that show the deep relationship between the two in "Guardians of the Galaxy 3" and "Guardians of the Galaxy: Holiday Special".
These include but are not limited to: Nebula gave Rocket Bucky's arm, Rocket was seriously injured and dying Nebula was anxious, and even did not hesitate to pull hands with Kamora, when the rocket woke up, the first question was also Nebula (although it may also be related to Nebula calling Star-Lord), Nebula even covered his face and cried when he heard the rocket wake up, you must know that such emotional expression is impossible in the previous lucky body.
Therefore, it makes perfect sense that Rocket built one of the most advanced robotic arms in the universe for Nebula, and that nanotechnology first appeared in Black Panther 1, and that during the five years of Rocket's close cooperation with Wakanda, it may be that this technology was obtained.
Coupled with the fact that Rocket is one of the smartest characters in the universe, even the Supreme Evolutionary who has created countless planets and new species has to admit that Rocket is stronger than him.
And the invention of gravity boots and freehand door cards in "Silver Guard 3" also shows the rocket's powerful hands-on ability, so if you want to inventory the smartest characters in the Marvel Universe, the rocket is definitely at the forefront.