70735 Ronin R.E.X. is a LEGO Ninjago: Masters of Spinjitzu set released on August 1st of 2015. It includes R.E.X., the Fire Aeroblade, the Sword of Sanctuary, a Fire Airjitzu flyer, a small ghost dragon, Deepstone Kai, Ronin, Ghoultar, Attila, and a Skreemer.
Battle against the Ghost Ninja with Ronin’s 2-in-1 R.E.X and unleash the detachable flyer for a duel with the Scythe Master. Take off for battle against the Ghost Ninja in Ronin’s awesome 2-in-1 R.E.X airship! Open the cockpit to place Ronin at the controls and launch into the sky. Swoop to fight the Ghost Ninja Attila riding on the ghost dragon. Defeat Ghoul Tar and escape with the precious Aeroblade safely stowed in the R.E.X cargo bay! Includes four minifigures with assorted weapon elements: Kai, Ronin, Scythe Master Ghoul Tar and Ghost Ninja Attila.
- Attila is exclusive to this set, although his appearance is identical to the other ghost ninja.
- Deepstone Kai appears in this set without shoulderpads in order for him to fit safely inside the Airjitzu flyer.
- This is one of two sets to come with an Airjitzu flyer (not counting the Airjitzu flyers themselves), the other being 70590 Airjitzu Battle Grounds.