Latias is a bird-like, dragon Pokémon. It has an aerodynamic body and glass-like down feathers. The lower half of its body is red with jet-plane wings and fin-like feet. It has a blue triangular marking on its chest. It has white and red arms that can be tucked into its body. The upper-half of its body is white. It has triangular ears and a red face with a white pentagon in the middle. Latias is a female only species; Latios is the male counterpart.
Latias ruffles its feathers and cries loudly when there is hostility toward it. Its downy feathers can enfold its body and refract light, which allows it to become invisible or alter its appearance. It can also use its down to use its signature move, Mist Ball. It is highly intelligent and can understand human speech. It is capable using telepathy to communicate with others. In the fifth movie, Latias had the ability "Sight Sharing", which allowed Latias and people around it to see exactly what Latios was seeing. It normally does not make contact with humans or other Pokémon, and disappears when an enemy is nearby. It forms herds with several members, and is usually found near water.