you cant
No, Zwelious is not capable of learning Tri Attack once it evolves into a Hydreigon.
trade it. There are no houndours in firered.
Does do not exist in firered.
The FireRed Pokemon does freeze on your Shining Opal FireRed hack game because your RAM is low.
no totodile is not obtainable is firered, but it is on emerald
No, Zwelious is not capable of learning Tri Attack once it evolves into a Hydreigon.
Tri attack is no longer a TM to teach that move you must find a move tutor that teaches the move in the game.
Slowpoke is not in firered only leafgreen can get it trade one to firered to get it.
Firered and leafgreen both can catch different Pokemon but there pokedex is the same, here is some examples: magmar only in leafgreen not firered, oddish in firered not leafgreen, ekans in firered not leafgreen, bellsprout in leafgreen not firered, pinsir in leafgreen not firered.
In Pokemon firered you can't, but in Pokemon leafgreen you can get it then trade it to Pokemon firered.
trade it. There are no houndours in firered.
There is no Mew in FireRed or LeafGreen.
in firered
Norman is not in firered.
Yes there are FireRed cheats
Does do not exist in firered.
Teddiursa can't be found on firered trade one from emerald to firered.