Avatar: Rise of the Elementor.

Y/N a young man who was born on the planet Pandora he lived normally then until he was 6 years old things change a war happened between humans and Na'vi and the humans lost and kick out of Pandora only a few were chosen to stay including Y/N since he was too young for a cryopod so then he was taken in by Jake Sully the man who betrayed the RDA for the Na'vi and become a full Na'vi over the years being on Pandora Y/N grow up normally with the Sully family then one night Y/N went exploring alone and he finds a cave and explore it then he finds four sliver balls once he got close they opened and four orbs come out and they went inside fused with him and Y/N starts acting different like acting like a different person since four alien beings call Ultralinks fused with him becoming one being and shared the body together they become ULTIMATE ELEMENTOR.