In the Lego Ninjago movie Garmadons engineers used to work for Sensei wu. What's supports my theory is the similarities in the designs of the ninjas mechs and the shark army's tech.
Wu | Ninjago Wiki | Fandom
Wu Bots | Ninjago Wiki | Fandom
LEGO Wu Sensei Minifigure njo658 | BrickEconomy
LEGO Ninjago: Sensei Master Wu Legacy With Golden Staff - Walmart.com
Lego ninjago Series 7 TCG Card Nr 54 Team-Unterwasser Wu Bot & Master Wu | eBay
Sooo it's been a while since I've gotten a ninjago set. Last time I bought one was Rebooted. Can anyone tell me why Sensei Wu is a robot now? : r/ Ninjago
LEGO Set 71234-1 Sensei Wu Fun Pack (2016 Dimensions) | Rebrickable - Build with LEGO
LEGO® Ninjago™ Master Sensei Wu from 70604 - The Brick People