Yes, you're given Latios after the Southern Island quest. Alpha Sapphire players get Latias, though you can get the other Lati in your version by acquiring an Eon Ticket.
In Pokemon Omega Ruby, Latios can be found in Southern Island after obtaining the HM Surf and going to Route 123. To find Latias, you will need to get the Eon Ticket to fly to Southern Island to get her. Pokemon Alpha Sapphire has the same methods, but with the opposite Pokemon.
These Pokemon can be found before the National Dex: Latias (Alpha Sapphire), Latios (Omega Ruby), Kyogre (Alpha Sapphire), Groudon (Omega Ruby), Regirock, Regice, and Registeel. These Pokemon can only be obtained in the Delta Episode: Rayquaza and Deoxys. Post-National Dex Legendary Pokemon are: Regigigas, Ho-Oh (Omega Ruby), Lugia (Alpha Sapphire), Heatran, Mesprit, Uxie, Axelf, Palkia (Omega Ruby), Dialga (Alpha Sapphire), Giratina, Cobalion, Terrakion, Virizion, Reshiram (Omega Ruby), Zekrom (Alpha Sapphire), Kyurem, Raikou, Entei, Suicune, Tornadus (Omega Ruby), Thundurus (Alpha Sapphire), Landorus, and Cresselia.
You can find Latios on Pokemon Emerald, Ruby, and SoulSilver.
Latios.
Illumise in Pokemon Omega Ruby can be caught in Zorua at the park.
Latios can be traded to Colosseum from Ruby, or Emerald.
latios is Pokemon number 197 in ruby
After Latios comes Kyogre, the legendary Pokemon for Sapphire Version.
Latios isn't in Pokémon Sapphire, but Latias is. Latias is in Pokémon Ruby! However, you can trade Latios from Pokémon Ruby to get it.
trade from silver
Migrate it!
you get latios on Pokemon ruby, latias on Pokemon sapphire!!