Kirby riding the Warpstar in Kirby: Right Back at Ya!
The Warpstar is the primary mode of transport for Kirby in many of the games he has starred in. It is usually shown as being a yellow star that immediately takes Kirby to another part of a level. Sometimes a Warpstar is the only way to reach the end of the level; sometimes they allow Kirby to reach secret areas; and sometimes they just provide a shortcut.
Whenever Kirby touches a Warpstar, he will get on it and ride it to another area of the level he is in. In games Kirby will hold on Warpstar and rides it from it's side. Doing this allows up to four people to ride on a Warp Star. In Kirby: Right Back at Ya!, Kirby really rides the Warpstar from top of it.
In the Super Smash Bros. series Kirby would enter a level crash landing his Warp Star. The Warp Star Is also a weapon that Kirby and other characters can use. When used, the character flies offscreen, then comes crashing down. The explosion can do some damage and can even KO Players with high damage percentage. In Smash Bros. Melee, the Warp Star's impact location could be controlled slightly to catch players out. Like most Melee weapons - Warp Star appeared as a Trophy.
It was also used as a Air Machine of the same name.