Were you looking for the set?
“I bet your airship isn't far either. What do you call it again? Rylo? Ruby?"
R.E.X. And could you have a little sympathy? Sold her so I could buy this place. As you can see, I'm trying to make an honest living.”
Jay and Ronin

The R.E.X. is is the personal aerial vehicle of Ronin, used for combat and escape.


In Shadow of Ronin (non-canon)

After Ronin stole the Ninjas' memories atop Spinjago, he used the R.E.X. to escape.

Ronin would use the R.E.X. to escape the Ninja after his mech's destruction.

After his final defeat at the Ninjas' hand, Ronin called on the R.E.X. to escape yet again.

Stiix and Stones

Ronin kept R.E.X. under his store in Stiix for use as an emergency escape, though claimed that he had sold her to purchase the pawn shop. Such an emergency came when Morro and the Ninja surrounded him demanding the Scroll of Airjitzu and he grabbed hold of the airship as it flew upwards. However, Morro used his Wind to knock the mercenary off R.E.X. and claimed the scroll for himself. Ronin eventually reclaimed his airship and flew to where Kai was becoming trapped by Strangle Weed, offering him a ride in exchange for something. When the Fire Ninja was unable to provide anything, Ronin flew off, though returned when Kai thought of something. He then dropped the Master of Fire off in Stiix, then left in R.E.X.

The Temple on Haunted Hill

After being bribed by Nya, Ronin flew her to the Samurai X Cave to retrieve her samurai gear.

The Crooked Path

Upon returning to Steep Wisdom after claiming the Sword of Sanctuary, Ronin used the time to clean R.E.X.. Later when he stole the sword, he activated the ship's autopilot as a decoy while he escaped down the river.

Later after Ronin was betrayed by Morro, he sent R.E.X. to save the Ninja, along with a recorded apology, and the real location of the tomb. However, he also gave the airship to them as an apology for his actions.

Grave Danger

The Ninja used the ship to travel underwater to the Tomb of the First Spinjitzu Master. Unfortunately, when they got there, R.E.X.'s autopilot programming kicked in and she submerged, leaving the Ninja with no way out and unarmed as they left their Aeroblades in her.

Curseworld, Part I

Ronin used her to travel to Stiix and dumped his profits within her on Morro, who was levitating his shop with the Wind.

Public Enemy Number One

In order to pursue and capture Kai and Nya, Ronin flew in R.E.X..


  • Blasters - The R.E.X. has double blasters in front of it used to battle opponents by shooting missiles.
  • Airjitzu Launcher - Near the back of the machine, an Airjitzu launcher is located to enhance the user's Airjitzu ability.
  • Flight - R.E.X. can travel long distances by flying.
  • Submarine - R.E.X. is capable of transforming into a submarine. Additionally, its thick glass makes it possible to dive deep into the ocean.
  • Auto-Return - When R.E.X. reaches its destination, it will initiate auto-return.


LEGO Ninjago: Masters of Spinjitzu

Season 5: Possession

Season 6: Skybound

Video Games


  • It is usually summoned by the whistle of the owner, Ronin, to travel out of danger.
    • It is currently unknown if the whistle can only work for Ronin or to everyone else in Ninjago.
  • In the subtitles of Shadow of Ronin, its name is mispelled as "Reks."


Landmarks, Vehicles, and more


Ignacia · Mountains of Impossible Height · Caves of Despair · Floating Ruins · Frozen Wasteland · Ice Fortress · Forest of Tranquility · Fire Temple · Ninjago Sky · Jamanakai Village · Wildwood Forest · The Lost City of Ouroboros · The Toxic Bogs · Torchfire Mountain · Desert Pyramid · Ninjago City · Mountain of a Million Steps · Birchwood Forest · Hypnobrai Tomb · Fangpyre Tomb · Anacondrai Tomb · Constrictai Tomb · Venomari Tomb · Sea of Sand · Mountain of Madness · Mega Monster Amusement Park · Spirit Coves · Golden Peaks · Crashcourse Canyon · Glacier Barrens · Stone Army Tomb · The Dark Island · Samurai X Cave · Hiroshi's Labyrinth · Blackwood Forest · Chen's Island · Chen's Camp · Echo Canyons · Corridor of Elders · Spinjago · Stiix · Haunted Hill · Wailing Alps · Vermillion Swamps · Boiling Sea · Ninjago Island · Endless Sea · Chrono Crater (Non-canon)


Four Weapons Blacksmith · Monastery of Spinjitzu · Lord Garmadon's Dark Fortress · Ed & Edna's Scrap N Junk · Lloyd's Treehouse Fortress · Master Wu's Academy · Kiddie Arcade · Buddy's Pizza · Wong's Costume · Hidden Workshop · Marty Oppenheimer School of Performing Arts · Concert Hall · The Serpentine's Underground Fortress · Grand Sensei Dareth's Mojo Dojo · Ninjago Museum of History · Ninjago Doomsday Comix · Temple of Light · Borg Tower · Wind Farms Power Station · Ninjago City Aquarium · Temple of Fortitude · Yang Tavern · Chen's Palace · Kryptarium Prison · Biker Tavern · Steep Wisdom · Ancient Library of Domu · Temple of Airjitzu · Hanging Temple · Borg Store · Vermillion Dome of Doom · Hono Mizu · Oni Temple · Temple of Resurrection · Dareth's Apartment · Royal Palace · Laughy's

Other Realms

Chima · Cloud Kingdom · Cursed Realm · Departed Realm · Djinjago · Realm of Madness · Realm of Oni and Dragons · Underworld


Destiny's Bounty (The Black Bounty · 2.0 · Destiny's Shadow) · Serpentine Bus· Serpentine Train · Ultra Sonic Raider · Samurai Mech · Samurai Mech (Stone Army) · Fire Mech · Earth Driller · Warrior Bike · Garmatron · Wu's Rickshaw · Wu's Ship · Golden Mech · Kai Fighter · Hover-Copter · Lightning Offroader · Destructoid · Proto Sam-X · X-1 Prototype · Chen's Ferry · D.B. Express · Condrai Crusher · Jungle Raider · Blade-Copter · Chen's Blimp · ElectroMech · Clouse's Earth Mech · Roto Jet · R.E.X. · Salvage M.E.C. · Chain Cycle · Mech-enstein · Titan Mech · Nya's Bike · Kai's Bike · Misfortune's Keep · Vermillion Racer · Raid Zeppelin · Sky Shark · Ultra Stealth Raider · Titanium Ninja Tumbler · Rock Roader · Oni Bike · Zane's Bike · Desert Lightning · Samurai VXL · Iron Doom · Vermillion Invader · Ninja Nightcrawler · Dieselnaut · Katana V11

The LEGO Ninjago Movie

Ninjago Island · Ninjago City · Ninjago High School


Imagination · Blade Cup · Shrinking Pill · Illuma-Swords · Lantern · Medallion · Minidroid Chess · Infovision · Map of the Golden Weapons · Map of Dens · Violet Berry Soup · Starfarer · Celestial Clock · Helmet of Shadows · Obsidian Glaive · Blind Man's Eye · Realm Crystal · Temporal Vortex · Cliff Gordon's Guide to Wooing Women · BorgWatch · Dapper Dan · Oni Masks (Vengeance · Deception · Hatred) · Dragon Armor (Helmet · Chestplate · Shield · Dragonbone Blade)