Season 12: Forbidden Spinjitzu

MAin antagonist is The Omega and the Oni are the Villains (Again)

Episodes
131. Return of the Oni

132. The Darkness

133. Into the Night

134. The Forbidden Spinjitzu

135. Ninja Crunch

136. Omega

137. Dark in the Bounty

138. Crushed

139. The fall of the Never-realm

Protagonist
Nobody