Gray is a young boy created from dark matter.
Gray was created when the Overlord was destroyed. It took a pile of dark matter before it died. After the Ninja left the island, Gray was stranded and lost. But after two months, he finallly got off the island. Every night, Gray is controlled by his darkness and runs everywhere, creating chaos in Ninjago without him even knowing it. After for months of his out-of-control actions, he arrived at the bounty as if it was destiny. Sensei noticed his arrival, using his spirit smoke. Sensei had a terrible vision of him destroying the bounty, but he invited him in anyway.
Gray wears a black kimono with a mysterious symbol on its side and back. He has purple hair and gray pants. His armor on his shoulders are also black. He also has a purple belt.
He will be in a fanfic soon.