Board Thread:Theories and Rumors/@comment-30938718-20180317102920/@comment-35373528-20180324043011

Chimadino wrote: I think The Overlord will return in Season 9. He will make an alliance with the Oni and with the help of Lord Garmadon, Pythor, Clouse and the Sons of Garmadon he frees Nadakhan from the Teapot of Thyrann, brings back the Time Twins and resurrects all the old villains (Samukai, Kozu, Cryptor, Chen and Morro). He might return.

However, I don't think he will ally himself with others or bring back villains.

It would be cool to see the Overlord again, I guess.