The Wu Bots were small drones contained within the Hydro Bounty.
During their escape from Kalmaar and his army, the ninja make way to a small cavern outside the Merlopia city borders. Kalmaar fires three torpedoes at the sub, but P.I.X.A.L. deploys three Wu Bots to throw the torpedos off course. Once the Bounty cleared the cavern, the Wu Bots stuck to the edges of the opening. Kalmaar's torpedos, locked on the Bots, hit the sides of the cavern, destroying the opening and preventing Kalmaar from following.
- 71756 Hydro Bounty (x2)
- 171. "Escape from Merlopia"
- The Wu Bots in the sets resemble "Tee Vee" from the LEGO Alpha Team theme and, more recently, the Hidden Side theme.
- Set designer Niek van Slagmaat is "very happy these made it in."
- They reuse legs of exclusive teen Wu and Mei.
- In the show, they more resemble cylinders with conical hats than square robots with legs.