We're just out here breaking all the rules today. You don't even have to shake anything to Plasma.
http://www.nintendoworldreport.com/news/72105/kirby-air-riders-opens-door-for-other-characters-to-use-copy-abilities
Kirby Air Riders will allow other racers to enjoy the privileges Kirby has enjoyed for more than three decades.
During a demo of Kirby's ability to inhale enemies, it was confirmed that the other available characters will have a functionally identical "Capture" ability to use abilities from monsters that spawn in the environment. The abilities will be tied to the B button rather than the controversial Y button.
Not all of the monsters will have abilities, as seen in the main Kirby games: these enemies will fire stars instead. Additionally, the Plasma ability will build charge automatically rather than by constant movement.