Get the bike voucher in the Pokemon fan club in vermilion city then show it to the cashier in the bike shop for a free bike.
You have to go to cinnibar island and meet up with Blue. Talk to him. He will then go back to Viridian City Gym and you can face him.
do like Pokemon
In jubilife city far left from the Pokemon center
Slowpoke can be found in many various places, for it is exclusive to Pokemon LeafGreen version. It can be found at Routes 4, 10, 11, 12, 13, 14, 19, 20, 21, 24, and 25. It can also be found in Fuchsia City, Vermillion City, Viridian City, the Safari Zone in Fuchsia City, and all of the Sevii Islands.
He won't be in viridian at first he will be at cinnibar island if you talk to him he will go to the gym in viridian city go to viridian city to battle him.
Viridian city.
viridian city
Viridian City, the second town you are ever in
In Viridian City
North from Pallet via Route 1.
Blue is the Viridian City Gym Leader (Badge #16)
He is the Gym leader in viridian city
Blue, the Viridian gym leader(looks like your rival for Pokemon FireRed/LeafGreen), is on Cinnabar Island. Talk to him and he'll say a few things, then go to his gym in Viridian City.
Route 2 is north from Viridian city.
Defeat the viridian city gym leader Blue.
You have to leave Viridian City and go through Mt Moon to get to Cerulean City. You may meet some bad guys on the way through Mt Moon and also get a fossil.