Is Nadakhan the only villain who had no connection to the ninjas and the ninjago lore.

-The serpentines story is connected with the ninjas parents and wu. It was an important part in ninjago history. -Overlord literally is the source of everything that has happened and connected to the fsm. -Master chen is deeply intervined with the serpentine war like i stated above. -Morro was wu first student and was supposed to be the green ninja. -Time twins with serpentine war connection -Sons of garmadon is about garmadon. -Oni plays a huge part in ninjago lore. Nadakhan seem to be...