|First appearance||WarioWare Gold (2018)|
|Latest appearance||WarioWare: Get It Together! (2021)|
- “That Wario guy is the worst! I'll wipe that stupid mustache right off of his stupid face! Huh...? Yeah! RAINBOW!”
- —Lulu, WarioWare Gold
In the cutscene after two stories are beaten, Lulu is seen in Crystal Park where she uses the Hydrocannon LX to hit a target with Wario's moustache and nose. This creates a rainbow, which excites Lulu.
In WarioWare: Get It Together!, Lulu can be seen holding two Hydrocannon LXs in one of the pictures in her gallery.