Drifblim

Diamond: It’s drowzy in daytime, but flies off in the evening in big groups. No one knows where they go.

Pearl +2: It carries people and Pokémon when it flies. But since it only drifts, it can end up anywhere.

Platinum +2: At dusk, swarms of them are carried aloft on winds. When noticed, they suddenly vanish.

HeartGold / SoulSilver: It can generate and release gas within its body. That’s how it can control the altitude of its drift.

Black 2 / White 2: They carry people and Pokémon, but the wind can catch them, so there can’t be a fixed destination.

Y / Alpha Sapphire: It’s drowsy in daytime, but flies off in the evening in big groups. No one knows where they go.

Sun: There was once an incident in which a man took a trip riding a Drifblim, only to go missing.

Moon: Even while under careful observation, large flocks of Drifblim flying at dusk will inexplicably disappear from view.

Ultra Sun: There’s a rumor that if you catch a Drifblim floating on the wind at dusk, you’ll be carried away to the afterlife.

Ultra Moon: The raw material for the gas inside its body is souls. When its body starts to deflate, it’s thought to carry away people and Pokémon.

Sword: Some say this Pokémon is a collection of souls burdened with regrets, silently drifting through the dusk.

Shield: It grabs people and Pokémon and carries them off somewhere. Where do they go? Nobody knows.

Legends: Arceus: It drifts along at dusk, perfectly silent. Its transient, melancholy aspect touches some people deeply—every so often, one will come upon a song or poem devoted to Drifblim.