Board Thread:Theories and Rumors/@comment-36592086-20180826021508/@comment-34330505-20180827184351

You could make the argument that the Ninja sort of cause each villain to come about.

S1: Lloyd releases the serpentine, and in turn, the Devourer S2: Because of their actions in S1, the Devourer's venom seeps into the ground and causes the Stone Army to rise S4: Because Zane sacrificed himself he let Chen kidnap him by accident S5: Lloyd accidentally let Morro in through the portal to the Cursed Realm S6: By destroying the Cursed Realm, they also destroyed Djinnjago, angering Nadakhan S8: Because the Ninja indirectly helped in awakening the Great Devourer, they killed Harumi's parents, making her mad S9: Wu entered the Realm of Oni and Dragons, allowing the Iron Baron to have what it takes to find the Dragon Armor.