Latias was originally a roaming Pokémon that made its home in the Hora region. Ryan encountered and battled it during his initial challenge of the Hora League. After getting promoted to Gym Leader, Ryan seeks out and challenges it again, this time catching it due to its infatuation with his Suicune.
Latias is a bird-like dragon Pokémon vaguely resembling Lugia. The lower half of her body is red with jet-plane wings and stubby feet that are similar to ones Crobat has. Latias has a blue triangle-shaped ring on her chest that resembles one of the spots Togepi and Togetic have. Latias's white and red arms can be tucked into her body in order to reduce air-resistance when in flight. The upper-half of Latias's body is white. She has triangle-shaped ears and a red face with a white pentagon in the middle.
Latias will form small herds of several members. They will rarely make contact with people or other Pokémon. If Latias senses hostility towards herself, she will ruffle the feathers all over her body and cry shrilly to intimidate her foe. However, she will usually disappear if she senses an enemy.
Latias comes with the ability Levitate, which causes Ground-type moves to miss. Latias can enfold her body with glass-like down to refract light and alter her appearance. She is highly intelligent and can understand human speech. She can telepathically communicate with others. Latias's Dragon and Psychic typing has given her the ability to wield attacks of many different elements (except for Fire).
Latias and Latios also had the ability "Sight Sharing" which allowed Latias and people around her to see exactly what Latios is seeing.
Latias is the only known Pokémon that can learn Mist Ball.