Ninjago: Swaddled in Shadow (Season 9)

Resistance in Ninjago City:
Lloyd Garmadon: Lost his green energy after a battle with his father, deeply traumatized by Harumi's betrayal. Becomes the leader of the underground Resistance, guiding the inhabitants through secret radio transmissions.
Nya (Master of Water): Strong, determined, and an indispensable support to Lloyd, she oversees the squad's combat organization.
Misako: Lloyd's mother, provides a scholarly approach, knowledge of ancient scrolls, and the history of the Oni.
P.I.X.V.Z. (Samurai X): Provides the Resistance with technological support and heavy armor.
Elemental Masters (Allies known from the Chen Masters Tournament):
In Season 4, Master Chen gathered all the heirs of the elements on his isolated island to steal their powers using the Staff of Elements. The Ninja united the Elemental Masters, exposed Chen's deception, and defeated his Anacondrai army. Since then, the Elemental Masters have been bound by bonds of friendship and duty to Ninjago. In Season 9, they answer Lloyd's call to protect the city:
Skylor (Master of Amber): Master Chen's daughter, determined, brave, and loyal. She can temporarily copy the elemental power of any master she touches. In Season 9, she plays a key role in the Resistance, risking her life to copy Lord Garmadon's Oni power and seize control of the Stone Giant.
Ash (Ash) — Master of Ash (Astral/Smoky Manifestations): A cold-blooded and elusive fighter from the Chen Tournament. He can transform his body into smoke and ash, dissolving into thin air for instant attacks and reconnaissance.
Karlof (Metal Master): A large, good-natured steelworker from Metallia. He can transform his body into strong steel. He speaks with an accent and is a straightforward and reliable fighter.
Neuro (Neuro) - Master Mind: Able to read minds and mentally influence enemies. Discreet and intelligent.
Shade — Master of Shadow: Can disappear into the shadows and move undetected. Secretive, a bit cynical, but loyal to the cause.
Turner (Griffin Turner) - Master of Speed: Possesses superhuman speed. Hyperactive, brash, and talkative.

The First Realm (Realm of Oni and Dragons): The very first of the Sixteen Realms, home to the First Spinjitzu Master and the two primordial races—the Oni (creatures of destruction) and the Dragons (creatures of creation). As of Season 9, this realm is a harsh, barren desert littered with the bones of gigantic creatures. It is home to the Dragon Hunters—a tribe of barbarians led by Iron Baron, who use chains made of meteoric iron to capture dragons and drain their elemental energy.
Events of the Transition: Kai, Jay, Cole, Zane, and the infant Wu arrived here using the Traveler's Tea during the destruction of Borg Tower. The transition was unsuccessful, and the tea was damaged, leaving them without contact with Ninjago and without supplies.
Kai (Fire Master): Imperious, hot-tempered, but incredibly loyal. In the First World, he tries to maintain a fighting spirit, although he often becomes irritated by the harsh conditions. He protects the infant Wu like a little brother.
Jay (Lightning Master): The team's comic relief, but in the First World, he becomes genuinely panicked and paranoid. He's prone to hysterics due to lack of comfort, but in crucial moments, he displays great resourcefulness and loyalty to his friends.
Cole (Master of Earth): Becomes the primary "guardian" and "father" to the rapidly growing Little Wu. Calm, strong, and reliable, Cole is the one who shows the most patience in caring for Wu, feeding him tea leaves and protecting him from danger.
Zane (Master of Ice / Nindroid): Logical, analytical, and reasonable. In the First World, his systems constantly scan his surroundings for threats. He tries to maintain a cool head and calculate his chances of survival.
Baby / Toddler / Teen Wu: Due to exposure to the Time Blades in Season 7, Wu was transformed into a baby. Due to the physics of the First World and the elemental energies, he begins to grow rapidly—from infant to teenager in a short time. At first, he remembers nothing, but gradually the Master's wisdom returns.

Lord Garmadon (Resurrected Oni): In Seasons 8-9, Garmadon is resurrected without his human soul or family love. He is a pure demonic destroyer, possessing the essence of the Oni. His power is fueled by battle and destruction. The more he fights, the stronger he becomes. His personality is cruel, cold-blooded, power-hungry, and uncompromising. He believes that strength is the only thing that matters in the world.
Princess Harumi (Silent Protector/Silent Guardian): The master puppeteer and leader of the Sons of Garmadon. As a child, she lost her adoptive imperial parents to the Great Devourer's attack and grew to hate the Ninja for their failure to save the city. Personality: Cunning, manipulative, vengeful, and a brilliant tactician. She masterfully feigned helplessness as a princess to lure Lloyd into falling in love with her and exploit him. She views Garmadon with religious reverence.
Ultra Violet: One of the syndicate's most trusted lieutenants. A crazy, sadistic, and eccentric racer, she enjoys chaos, violence, and loud laughter. During battle, she often uses the Mask of Deception or the Mask of Hatred. A completely unstable character, she enjoys tormenting her enemies and is loyal to Garmadon due to her love of anarchy.
Killow: A massive, muscular enforcer of the Sons of Garmadon. Silent, stern, and loyal to Harumi. He uses the Mask of Vengeance, which grants him incredible physical strength and stone skin. He acts as a living battering ram.
Mr. E: A mysterious ninja android and member of the Sons of Garmadon. He never speaks, his face hidden by a helmet. In combat, he uses four arms (activating the Mask of Vengeance) and hidden blades. He is a deadly, emotionless killer and an excellent swordsman.
The Sons of Garmadon Syndicate: An army of motorcycle-riding bandits who control the streets of Ninjago City. They wear leather jackets bearing the Oni symbol. In Season 9, they act as Garmadon's military police, raiding any Ninja sympathizers.

Season 8 ("Sons of Garmadon") begins with the emergence of the mysterious biker syndicate "Sons of Garmadon," led by the enigmatic Silent Intercessor. Their goal is to collect the three Oni Masks (the Mask of Vengeance, the Mask of Deception, and the Mask of Hatred) to resurrect Lord Garmadon as his purest, darkest, and most evil Oni form. Princess Harumi, who survived the destruction of Ninjago City by the Great Devourer as a child, blames the Ninja for her parents' deaths and deifies Garmadon, who destroyed the serpent. She conceals her identity, gains Lloyd's trust, and betrays him. The Sons of Garmadon collect all the masks and perform a ritual at the Temple of Departure. Despite the Ninja's attempts to thwart them, Garmadon is resurrected.
Lloyd attempts to confront his father alone in Kryptarium Prison, but Garmadon, fueled by his darkness and lust for battle, brutally beats the Green Ninja, nearly killing him and stripping him of his elemental power. Garmadon creates a gigantic Stone Giant with the power of the Oni Masks and takes over Ninjago City. In the Season 8 finale, Kai, Jay, Cole, Zane, and a rejuvenated Master Wu (in the body of a baby) are trapped within the Giant. To escape, they use the Traveler's Tea, which transports them to the Prime Builder's home dimension—the First World. Ninjago City presumes them dead.
Season 9 ("Swaddled in Shadow") begins with Ninjago under the total control of Lord Garmadon and Harumi. Lloyd, having recovered from his injuries thanks to the care of Nya and Misako, hides in the underground canals. Broken by the loss of his power and friends, he resolves to form a Resistance. They are joined by the remaining Elemental Masters. Meanwhile, in the First World, Kai, Jay, Cole, and Zane struggle to survive in the barren desert, raising the rapidly growing Baby Wu and defending themselves from the Dragon Hunters led by Iron Baron. The main goal of Season 9 is to unite the Resistance in Ninjago and have Master Wu and the ninja find the Dragon Armor so they can return home and defeat Garmadon.