MERMAL 1 . MERMAL is a type of collectible toy. They are half hatchimals (hatch is hatching, and imals is the animal syncopation) and half mermaids. 2 . NERMAL, with N, is a cute tabby gray cat that Garfield is jealous of. Although kind at times, Nermal regularly and often intentionally annoys Garfield and sometimes Odie, causing Garfield to try to banish him to Abu Dhabi.