Parabomb

Para-bombs are Bob-ombs with parachutes. They descend slowly from the sky, and once they land, they act like normal Bob-ombs. They are just like Paragoombas or Koopa Paratroopas, except in most versions where they appear, they don't have any wings, and they don't appear in a lot of Mario games.

Super Mario World
They make their first appearance in Super Mario World, where they descend from the sky and once on land act like normal Bob-ombs.

Super Mario 64 DS/New Super Mario Bros.
In New Super Mario Bros. and Super Mario 64 DS, there's a minigame called Bob-omb Squad where Para-bombs must be blown-up before they hit a guarded flower.

New Super Mario Bros. Wii
In New Super Mario Bros. Wii, Para-bombs first appear in World 8-5 where they are one of the many hazards alongside Crowbers and lava geysers that Mario must be careful of.

Paper Mario: The Thousand-Year Door
Para Bob-ombs made a brief cameo in Paper Mario: The Thousand-Year Door. when Mario and his partner were shot out of the cannon in the Fahr Outpost the hatch that held the Bob-ombs opened up and released the Bob-ombs. They came down slowly using red parachutes.

Paper Mario: Sticker Star
Para Bob-ombs are set to appear in the new Paper Mario: Sticker Star for the Nintendo 3DS. They appear in a mountain area falling from the sky.

Super Princess Peach
In Super Princess Peach Para-bombs (here known as Parabombs), behave much in the same way as in Super Mario World, there is also a sub-species of Para-bomb named Glad Parabomb.

Hotel Mario
In Hotel Mario, Para-bombs (here known as Para Bob-ombs) had wings and could crash into enemies from above. They are similar to the Para-bombs from Super Mario World, except for the fact that they could follow Mario and Luigi while falling. If they hit a door, the door would close, making Mario and Luigi's task harder.