you cant dumby
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If you're asking if you can get an egg for Latios or Latias without breeding them, then the answer is no; you cannot get an Egg for either of them without hacking the game.
You can only capture one of them but of course you can have both by trading.
Latias and Latios
Yes, only if you didn't save it or trading or by nintedo event to get the eon ticket, then you'll get permission to go to southern island. there will be a latias or latios there, lv50
Once you ask the Copycat in Saffron City to get her Clefairy Doll back Talk to the man inside The Pokemon Fan Club.Then he will give you the Clefairy Doll go outside.Then Steven Stone will talk to you he will say that Latias(HeartGold)or Latios(SoulSilver).Finally Latias or Latios will roam Johto or Kanto.But sorry,you can't get Latios without Cheating,Hacking or Trading. :(
if they want to yes
Yes you can. later in the game Latias (or latios depending on which game you have) is attainable. Like mesprit in Pokemon diamond and pearl and like mesprit, latias and latios tend to flee.
Latios is in the Northern Range and Latias is in Pitfall Valley.
No, neither Latias nor Latios are breedable.
No, there is no 2nd movie that features Latias and Latios.
Latios and Latias is brother and sister Latias is the sister Latios is the brother if u seen the movie they share the same father