Dust Mousse is an enemy from Final Fantasy IV Advance and Complete Collection versions. It is recommended to try and defeat all enemies it appears with at once to minimize damage, so summoning Bahamut or using Twincast is recommended, while the others heal up or defend from the onslaught of this enemy.
Final Jelly (ファイナルゼリ－, Fainaru Zerī?) appears as an Egg Monster in the Japan-exclusive Hanjuku Hero: Aa, Sekaiyo Hanjukunare...!. The sprite is a modified version of the Flan type of monsters from Final Fantasy IV.
Mousse is a pudding-like dessert made of sugar, eggs, and usually some kind of flavoring, such as chocolate. It can also be made non-traditionally with cream as an ingredient.