Board Thread:Theories and Rumors/@comment-24684199-20191007165345/@comment-39780427-20191015221832

Yeah, basically. I think that Zane was blinded by the Scroll of Forbidden Spinjitzu, so Vex sought him out and controlled him, and used his powers to control a dragon, attacking Akita's village. Also, Vex is the main antagonist, not Zane / Ice Emperor.