To defeat your rival with a croconaw teach it ice punch, blizzard, and/or ice beam.
You Have To beat Red First.
VS Mewtwo is not in Pokemon Stadium 2 instead a VS Rival mode was made for the game. The Rival is the rival from Gold, Silver and Crystal officially named Silver.
Silver is the rival in the games Gold, Silver, Crystal, HeartGold and SoulSilver.
You can beat the Elite 4 the 2nd time, do Gym Leader Rematches, More Legendary Pokemon, the new area's you can visit, beat Clair and Lance at Dragons Den, Do a Rival Battle at the Indigo Plateau
in indidgo league
You Must Complete the Burned Tower what i did was Got a Super Repel And Then Beat my Rival But i did it On Crystal
i think he goes to blackthorn, and inside dragons den, after that you can challenge him before entering the Pokemon league
Your rival is named Rival and he's the same rival from Gold, Silver, and Crystal version. His official name however is Silver.
You Have To beat Red First.
Gary isn't in heart gold and your rival chooses whatever Pokemon is opposite to yours.
With Pokemon.
VS Mewtwo is not in Pokemon Stadium 2 instead a VS Rival mode was made for the game. The Rival is the rival from Gold, Silver and Crystal officially named Silver.
Silver is the rival in the games Gold, Silver, Crystal, HeartGold and SoulSilver.
You can beat the Elite 4 the 2nd time, do Gym Leader Rematches, More Legendary Pokemon, the new area's you can visit, beat Clair and Lance at Dragons Den, Do a Rival Battle at the Indigo Plateau
Nothing.thats it
well u cant unless u have another game like gold ar silver or trade with a friend no you must trade from Pokemon colosseum which can get a shadow croconaw because fire red is not compatible with gold and siver all you have to do is purify croconaw then trade it to fire red and leave it in the four island day care with a ditto and hatch the egg you receive and you get totodile.
Pikachu