Season 21: The Master of Doom

MAin Antagonist: Darkgung Villains: Oni

Episodes
238. The Master of Doom

239. Darkgung Returns

240. the Dark Cloud

241. No Options Left

242. Oh Yes there is Options

243. The Destruction Masks

244. Ninja Armor Still Alive

245. The Realm of Darkness

246. Emperor Darkgung

247. Clouds in Stone

248. Spinjitzu Is Gone

249. Memories Restored

250. The Run

251. Nothing is Left

252. Everything is restored

Protagonist
Kai and Jay