70737 Titan Mech Battle is a Ninjago set released in summer 2015. It features two mechs.
Get set for the ultimate Mech Battle as Zane's Titan Mech takes on Blade Master Bansha's Ghost mech. Place Zane in the cockpit and fire the stud shooters and dodge the massive swords of the 4-armed Mech-enstein. Use all of the cool Ninja weapons to stop Scythe Master Ghoultar getting into the Samurai X Cave and stealing the Aeroblade.
- Zane's Deepstone outfit is exclusive to this set, similarly to how Lloyd and Nya's outfits are exclusive to their set.
- Nya's Samurai X suit in this set is the same one she wore for her set in the previous season, 70750 Ninja DB X. The only difference is that she has black shoulder pads instead of grey ones, and it contains two silver swords instead of two black ones.
- In 70731 Jay Walker One and 70738 Final Flight of Destiny's Bounty, Bansha's minifigure has a ghost "tail." In this set, she has legs, making this version of her "exclusive" to this set.
- The Ghost Mech's overall design is very similar to the mech Lord Garmadon used near the end of season two.
- This is the first Ninjago set to feature two mechs.
- The set includes Zane's first mech.
- Jay's nunchucks look similar to the Obsidian Nunchucks from Shadow of Ronin. However, the colors of the chain and the handles are reversed.