Legendary Pokémon will appear randomly on the maps, only after you have defeated all gym leaders, elite 4's, champions and both Hoenn/Sinnoh battle frontier's. (This does not include Events or Sidequests).
Go to a map, walk around until you find a Pokemon, and catch it.
On the cave maps.
Darkrown is a fake Pokemon but if you play POKEMON Vortex you can catch it
It's simpler if you buy a Masterball and have high stat Pokemon.
NO
Yes.
well he is fire so you catch him at the lava place (my name hhayne)
To Catch A Pokemon In Pokemon Vortex Go In Any Map Search A Pokemon Battle With It, Scroll Down You Will See Potion, Max Heal, Poke ball, Master ball etc. Low The Hp And Use The Pokeball, Greatball, Ultraball or Masterball!
Defeat all the gym leaders and then legendaries will appear on the maps.
Obtain all the gym badges and they will randomly appear on the map.
yes you have to defeat all the champions before catching a legendary pokemon
moltres obviously as it is a legendry