Malboro

The Malboro, also known as a Morbol or Oscar, is a recurring enemy from the series. Its appearance location varies by game. In early games they attack in large groups, and in later games they tend to attack solo. They are described as a large, green, tentacled, non-photosynthetic plant with a large anemone-like head and wide mouth. Their signature attack, Bad Breath (also referred to as Breath or Sour Mouth), afflicts one or more party members with nearly every status ailment in the game.

Final Fantasy II
There are several types of Malboros. None of them know the Bad Breath attack, but their regular attacks cause several status aliments.

Final Fantasy IV
Molbols appear in appear in both the Slyvan Cave and Lunar Ruins.

Final Fantasy VI
Mad Oscars, and their upgrade, Evil Oscars, usually attack with a group of stronger enemies. Once all other enemies have been defeated, the Oscar will start using its Sour Breath attack on the whole party.

Final Fantasy VII
Malboros appear on the cold mountain paths. They have a tendency to use breath attacks a lot.

Final Fantasy VIII
Malboros appear on the Islands Closest to Heaven and Hell, as well as the Esthar Plains before the Lunar Cry. If the party isn't fast enough in defeating it, the Malboro will use Bad Breath on the entire party.

Final Fantasy IX
The Malboro first appears at Castle Pandemonium, then on the world map. They have a tendency to float, but are not as tough as in other games.

Final Fantasy X
The Malboro appear in the Calm Lands. They tend to use normal attacks over their Bad Breath. An upgrade, the Great Malboro, has a high chance of ambushing the party and opening with Bad Breath.

Final Fantasy XI
Malboro are downright annoying in many Final Fantasy games, and Final Fantasy XI is no exception. The lowest level of Malboro can be encountered in the Pashhow Marshlands, an area that serves as part of the route between Bastok and Jeuno. Almost every single weapon skill Morbols use causes a status effect, except for Vampric Lash, which drains HP. Impale serves as a simple attack that sometimes inflicts paralysis, Sweet Breath puts the target to sleep, and Bad Breath (learnable by Blue Mages at a very high level) inflicts a slew of status effects as usual, and is known to be a danger even to players that are capable of easily taking them down.

Final Fantasy XII
Malboros are the weakest member of the Malboro genus. They can be found wandering the Salikawood. A giant Malboro, called Carrot, can be found during a Hunt later on.

Final Fantasy Tactics
Malboros are a family tree that include Malboros and Ochus.

Final Fantasy Tactics Advance
Malboros appear in several maps, along with their upgrade.

Final Fantasy: Crystal Chronicles
A large Malboro appears as the boss of the Mushroom Gardens, casting Blizzard and Slowga as well as using its Bad Breath attack. Like most enemies, its appearance was similar to its Final Fantasy IX counterpart.

Mario Hoops 3-on-3
Two Malboros appeared in the secret court Malboro Gardens, one behind each basket. The Malboros would sometimes attack with their purple Bad Breath, which knocked down players if hit by it and inflict them with the Poison, which slows down characters. The Malboros stray from their normal appearances, with only five eyes, each very large and pink, but still retaining their green skin.

Etymology

 * The Japanese name for it, Moruboru, may be translated to "mold balls".
 * The Japanese onomatopoeia "boro" is the sound of an upset stomach.
 * It may also be a combination of two words, the Latin mal (bad) and the Greek boros (breath).
 * The name may also be a reference to Marlboro Cigarettes, since the creatures often spew horrid-smelling fumes.