Nothing you just catch them that's it. Psst in the monean and viapois chamber you can rarely find a question and exclamation mark unown.
Annon.Collecting.
You catch unknowns.
To get Pokemon firered on PC download a vba and Pokemon firered ROM
You can catch a Ho-Oh at Navel Rock in Pokemon FireRed.
You can catch Moltres at Mt. Ember Peak in FireRed.
you can not catch him
nothing
in the ruins of alpha after you solve the puzzles
yes in the Solaceon Ruins
yes there are unown Pokemon in fire red. you have to go to the Tanoby Ruins on seven island
you can't catch any hoenn Pokemon in firered or leafgreen you must trade hoenn Pokemon from ruby or sapphire or emerald to leafgreen or firered.
You cannot get it in Pokemon FireRed. It doesn't matter because it is not necessary in Pokemon FireRed.