The Bomb is a flying enemy from Final Fantasy IX found on the plateaus around Alexandria and Lindblum.
A Bomb is also encountered on-board the Prima Vista along with Adelbert Steiner. This battle is predetermined and will end with the Bomb exploding after a duration and when Steiner has taken sufficient damage.
Bombs can be dangerous to fight, as after using Grow three times they will use Blowup, which inflicts heavy damage to its victim and likely KOs them if fought early in the game. Casting Sleep or Night is effective as they are not immune to Sleep status and therefore can be attacked with non-physical skills.
Attacking with Wind, Ice, or Water-elemental weapons or skills can help as it is weak to all three, but one should avoid using Fire-elemental attacks as it absorbs them. It is recommended for Quina to try and eat a Bomb early on to learn the valuable Mustard Bomb spell.