Gordos are spiked metal balls with eyes that commonly appear as obstacles in Kirby games. They float through the air in set patterns with their spikes undulating in and out. Gordo are invulnerable to attack and cannot be defeated only avoided. They have appeared in every Kirby game.
Super Smash Bros.
In Super Smash Bros. series, Dedede throws them as projectiles. In Brawl, they were used in the move Waddle Dee Toss but, only once in a while and had extra damage. In Super Smash Bros. for Nintendo 3DS / Wii U, the move was changed to Gordo Throw, which reduced power but gave control and made all the projectiles Gordos.