Legendary Pokémon
Latios is a Dragon/Psychic type Pokémon. In most games (Ruby, as a Roaming Pokémon (In Sapphire, Latias will appear instead, but an event item allows you to go to an island where it is catchable. Also, there is an error in Ruby that causes Roaming Pokémon to have lower stats than other Pokémon), Emerald (You get a choice after the Elite Four. The error was fixed in Emerald.), SoulSilver (Latias appears in HeartGold), and Black 2 (Latias appears in White 2). It has its own special item, which it shares with its counterpart. It also obtained a Mega Evolution in X and Y, but there was no way to obtain the Mega Stone needed until the next set of games. Latios has higher offensive stats than its counterpart.