You wil have to trade with FireRed or XD.
Poliwhirl → Poliwrath, Shellder → Cloyster, Staryu → Starmie and Eevee → Vaporeon
lombrea, evee, poliwhirl, shellder, and staryu. some of these can only be found in firered and leafgreen so you will need to trade. that's all I can think of.
Pallette Town with the Super Rod. (Yes, you need the Super Rod in Fire Red.)
Cinnabar Island, Icefall Cave (Rear), One Island, Pallet Town, and Vermilion Harbour. You need to fish with a Super Rod
a piece of cheese
You wil have to trade with FireRed or XD.
Cloyster can only be obtained through evolving Shellder. Shellder is a FireRed-exclusive Pokemon in Generation III.
Shellder can be found in firered and leafgreen either you fish for one or look in seafoam islands.
I know firered can, if you seen a shellder look at it on your pokedex and check its area if it says unkown you will HAVE to trade a shellder to leafgreen from firered.
You can catch shellder in Pokemon red, blue, yellow, gold, silver, crystal, FireRed, XD, diamond, and pearl.
Poliwhirl → Poliwrath, Shellder → Cloyster, Staryu → Starmie and Eevee → Vaporeon
u hau have to trade a shellder from firered and then evolve it w/ a water stone.
lombrea, evee, poliwhirl, shellder, and staryu. some of these can only be found in firered and leafgreen so you will need to trade. that's all I can think of.
Pallette Town with the Super Rod. (Yes, you need the Super Rod in Fire Red.)
you cant you can only get shellder in Pokemon fire red version sorry about it it made me mad to
Cinnabar Island, Icefall Cave (Rear), One Island, Pallet Town, and Vermilion Harbour. You need to fish with a Super Rod