Board Thread:Theories and Rumors/@comment-36062903-20180919031659/@comment-30938718-20180928132548

Katherine1977 wrote: Chimadino wrote: Emperor Serpentine wrote: Overlord MAY return, but if he does, he gets destroyed by the Ninja and never returns. Then, Pythor releases all the villains from Kryptarium Prison and they conquer Ninjago with help from the Oni. The Overlord can't be destroyed. He and The oni will destroy Ninjago City and The Ninja will evaculete the peapole. This is why the Sky Pirates and Soto could return. The only thing is that.... Nadakhan could never turn good....

He didn't even redeem himself in S6 Nadakhan will not return. Just the other Sky Pirates.