The Ninja

The Ninja are a team formed by Wu to protect the land of Ninjago. Since their formation, they have fought Lord Garmadon and his Skeleton Army, the Serpentine and the Great Devourer, The Overlord and his Stone Army, the Nindroids built by Cyrus Borg and P.I.X.A.L. (controlled by the Overlord), Master Chen and his Anacondrai Cultists, and The Preeminent, Morro and the Ghost Warriors who escaped the Cursed Realm.

Members

 * Lloyd Garmadon (Green Ninja/Golden Ninja/Master of Energy)
 * Kai (Red Ninja/Master of Fire)
 * Zane (White Ninja/Titanium Ninja/Master of Ice)
 * P.I.X.A.L (Zane's Adviser)
 * Cole (Black Ninja/Master of Earth)
 * Jay (Blue Ninja/Master of Lightning)
 * Nya (Water Ninja/Samurai X/Master of Water)

Teachers

 * Sensei Wu (Teacher/Master of Creation)
 * Sensei Garmadon (Lloyd's Father/Master of Creation)

Honorary Members

 * Skylor (Orange Ninja/Master of Amber)
 * Dareth (Brown Ninja)

Allies

 * Misako (Lloyd's Mother)
 * Ed (Jay's Father)
 * Edna (Jay's Mother)
 * Lou (Cole's Father)
 * Dr. Julien (Zane's Father/Creator, now deceased)
 * Cyrus Borg (Helps make vehicles and weapons for the Ninja)
 * Falcon (Zane's Companion/Communication for the Ninja)
 * Ronin (Business Partner)
 * Elemental Masters (Helped defeat Chen and his army)
 * Skulkin ("All of Nothing")
 * Serpentine ("The Titanium Ninja" and "The Corridors of Elders")
 * Stone Army (Controlled by Dareth in "Rise of the Spinjitzu Master", now presumably destroyed)
 * Nindroids (Became Borg's security drones as shown in "The Invitation")
 * Dragons
 * Elemental Dragons
 * Ultra Dragon (Combination of the Four Dragons)
 * Rocky (Cole's Dragon of Earth)
 * Flame (Kai's Dragon of Fire)
 * Shard (Zane's Dragon of Ice)
 * Wisp (Jay's Dragon of Lightning)

Weapons
The Ninja have had major weapon tiers that they used in battles. They are the Golden Weapons, Elemental Blades, Techno Blades, Aeroblades, and the Sword of Sanctuary. Zane, Kai, Cole, and Jay have had five, Lloyd has one, and Nya has no major weapons yet and only use regular weapons.

Golden Weapons

 * Kai (Sword of Fire)
 * Zane (Shurikens of Ice)
 * Cole (Scythe of Quakes)
 * Jay (Nunchucks of Lightning)

Elemental Blades

 * Jay (Lightning; Blue)
 * Kai (Fire; Red/Orange)
 * Zane (Ice; Light Blue/White)
 * Cole (Earth; Green/Purple)

Techno Blades

 * Zane (Staff; Light Blue)
 * Cole (Flail; Green)
 * Jay (Chainsaw Blade; Yellow)
 * Kai (Sword-like; Red)

Aeroblades

 * Kai (Red)
 * Cole (Orange)
 * Zane (Light Blue)
 * Jay (Yellow)

Sword of Sanctuary

 * Lloyd

Trivia

 * Technically, all of the Ninja have the title "Master," as they are all Masters of an element.
 * This was shown in "The Corridor of Elders," when Arcturus identified Lloyd as "Master Lloyd."
 * At some point, all members of the team (and some allies) have turned against their allies at some point:
 * Garmadon was turned evil in his childhood by the Great Devourer and was the main antagonist of the Pilot Episodes and half of the second season.
 * Lloyd was a minor antagonist in Season 1 and was possessed by Morro in Season 5.
 * Cole was hypnotized by Skales.
 * Nya, Cole, Jay, and Zane were corrupted by Dark Matter (although the last three were only briefly corrupted before Lloyd undid the effects).
 * P.I.X.A.L., Cyrus Borg and Sensei Wu were controlled by The Overlord.
 * The Elemental Masters were competing in Master Chen's Tournament of Elements.
 * Skylor was working for Chen.
 * Kai was corrupted by the Staff of Elements.
 * Ronin was the main antagonist in "Shadow of Ronin," and betrayed the Ninja in "The Crooked Path."
 * Misako was controlled by Bansha in "Grave Danger."