Metal Babble(Japanese: はぐれメタル, Stray Metal) is a monster in Torneko's Great Adventure: Mystery Dungeon. Unlike Slimes, who are the weakest enemies in the game, Metal Babble's have double the speed and a ridiculous amount of defense points to protect them against any attacks. They're also necessary to boost Torneko's levels early in the dungeon, as they give a lot of experience points once K.O.'d.
Metal Babbles give a high amount of experience and always drop a Joy Seed when they are defeated. However, they are hard to land a hit on, as they run away from Torneko with double speed, warp away when damaged, and have lots of defense, despite having less HP than a Slime. In addition, they have a low spawn rate. If the player finds one by luck, the best way to get them is by cornering them in a dead end, or in a room and attempting to land a hit when the chance comes, for example with an Arrow. Do it before Torneko is sent to the next floor because of the Earthquake. If Torneko is in possession of a Cloning Staff, it can be used to multiply the Metal Babbles to get a large number of levels.
One of the possible effects of the Chance Scroll is to turn all monsters on the floor into Metal Babbles.
It is possible to get a Metal Babble to attack Torneko by using a Blinding Herb or Panic Herb and standing in its way. If done so, Metal Babbles will attack Torneko twice in one turn similarly to Silver Devil.