by using the force
chaeat
Yes, you do need to have captured Latios and Latias in order to receive a Johto starter Pokemon. However, they themselves do not play an important role. To receive a Johto starter Pokemon from Professor Birch, you must have captured (or in some way owned) every Pokemon in the Hoenn Pokedex, so naturally having Latias and Latios is necessary.
latias is in the MOVE called Pokemon heroes
latias is in Pokemon ranger signs.
Latias is from the Hoenn reigon.
latias
Of course you can get a Latias in Pokemon FireRed. However, Latias is not a naturally found Pokemon in the game - you must trade it from Sapphire version. Of course, you could use a cheating device to obtain a Latias, but other than that, you will have to trade for it.
the movie latios and latias come out on is in Pokemon heros the 5th movie
in southern island there was latias and latios you will meet latias in Pokemon sapphire and latios in Pokemon ruby
it is latias
sorry, even if they DO have genders no legendary pokemon can breed includes ditto with latias
It is not possible to get Latios, Latias and Magikarp or any non-starter Pokémon as your beginner Pokémon on Pokémon emerald. The only way to do this is via a cheat device such as action replay or game shark.