Nebula is a Luphomoid assassin, an adopted daughter of the intergalactic warlord, Thanos and adopted sister of Gamora.
Portrayed by: Karen Gillan
1. Guardians of the Galaxy
As the right-hand woman of Ronan the Accuser during his and Thanos' quest to retrieve the Orb, she helped him in the fight against the planet Xandar and the Guardians of the Galaxy.
2. Guardians of the Galaxy Vol. 2
Nebula vanished after a fight against her sister. Nebula soon was captured by the Sovereign and handed back to the Guardians. She escaped and helped Taserface lead the other Ravagers in a mutiny against their former leader Yondu Udonta before leaving to find and kill Gamora.
After forgiving and helping her own sister alongside the Guardians during the Battle on Ego's Planet, she left in a ship to pursue a revenge mission against Thanos.
3. Avengers: Infinity War
Nebula was eventually captured by Thanos and used as a bargaining tool to convince Gamora to reveal the location of the Soul Stone. Escaping and then pursuing Thanos to Titan, Nebula learned that Thanos had killed Gamora and aided both the Guardians and the Avengers in combating Thanos.
Despite their efforts, they failed to stop Thanos from obtaining the Infinity Stones, which he then used to wipe out half the universe's population. Nebula was among those who survived but was left alone in space while departing from Titan to Earth with Stark in Benatar until they are found by Captain Marvel, who brought the pair to the New Avengers Facility in New York.
4. Avengers: Endgame
Now on Earth, Nebula joined the Avengers, participating on the Ambush on Thanos. Following Thanos' murder at the hands of Thor, she spent the next five years traveling throughout the world with Rocket Raccoon under Natasha Romanoff's command.
In 2023, she joined her fellow Avengers in the Time Heist, traveling to Morag in 2014 with War Machine to retrieve the Power Stone, creating an alternate timeline in the process. However, she was kidnapped and replaced by her alternate past self, who took her place and returned to the future.
Teaming up with the Gamora from alternate 2014, Nebula killed her past self and participated in the Battle of Earth. In the aftermath of Stark's sacrifice during the battle to use the Infinity Stones to eliminate Thanos and those loyal to him, Nebula attended his funeral to honor him.
Nebula, along with Thor and Rocket, left the Avengers and rejoined the Guardians of the Galaxy once again.