Mom Bomb (Mum Bomb in the PAL release) is a fiend/bomb-type enemy from Final Fantasy XII. It can be found in the Great Crystal. The Mom Bomb has a chance to drop a Diamond Armlet, which sells for 10,000 gil. Three versions of the Mom Bomb exist (though the only difference between the first two is HP); the high level variant is fought in the optional part of Great Crystal.
Being a magickal construct much like a simple explosive, created by the lords of the ancient city to prevent intruders reaching its heart. Its body is formed of a strong metal of surpassing quality, beneath which seethe magicks and Mist under tremendous pressure. Though they are individuals, as a side-effect of their simultaneous creation they are as facets of a single consciousness, and have been known to coordinate their attacks on intruders to deadly effect.