You can't, if you want it you'll have to transfer one from Ruby or a friend who has one.
you cant catch him in there only in trade
That's not possible latias and latios are caught in ruby, sapphire or emerald you must trade them to firered to get them.
How do you catch latios in Pokemon sapphire
no you can not you have to trade for Latios
No...unless you defeated the Latios...
No
Neither pokemon can be obtained in firered you will need to trade both from Ruby, Sapphire or Emerald.
you catch latios in the dragons den after defeating claire, you get to choose either latias or latios
To get Pokemon firered on PC download a vba and Pokemon firered ROM
No.
You can catch a Ho-Oh at Navel Rock in Pokemon FireRed.
You can catch Moltres at Mt. Ember Peak in FireRed.