Drifblim — every printing, every price, every gap.

At dusk, swarms of them are carried aloft on winds. When noticed, they suddenly vanish. It’s drowzy in daytime, but flies off in the evening in big groups. No one knows where they go. It carries people and Pokémon when it flies. But since it only drifts, it can end up anywhere. It can generate and release gas within its body. That’s how it can control the altitude of its drift. They carry people and Pokémon, but the wind can catch them, so there can’t be a fixed destination.