Toad in the Jet Bubble. The Jet Bubble is a small bike in Mario Kart Wii. It turns corners about the same as the Sneakster, and it has very balanced stats. As its name might suggest, it looks a little bit like two round bubbles held together by the seat. Retrieved from "https://mariokartwii.fandom.com/wiki/Jet_Bubble?oldid=43443" Community content is available under CC-BY-SA unless otherwise noted.