It's in Celadon City and you obtain the Rainbow Badge.
You need the rainbow badge which you get a celadon city Hm cut is needed.
The 8 badges for Pokemon Red are: Boulder Badge, (Brock) Cascade Badge, (Misty) Thunder Badge, (Lt. Surge) Rainbow Badge, (Erika) Marsh Badge, (Sabrina) Soul Badge, (Koga) Volcano Badge, (Blaine) and Earth Badge. (Giovanni)
the fog badge and the rainbow wing
Get the Thunder Badge And Talk To Jenny And She Will Give You One
Erica in Celadon City.
It's erika the grass type user. the badge is the rainbow badge
It's in Celadon City and you obtain the Rainbow Badge.
Head west of Celadon to the cycling road, from there go to Fuschia city to battle Koga.
The Rainbow Badge
* Pewter Gym - Rock Badge * Cerulean Gym - Cascade Badge * Vermillion Gym - Thunder Badge * Celadon Gym - Rainbow Badge * Fuchsia Gym - Soul Badge * Saffron Gym - Marsh Badge * Cinnabar Gym - Volcano Badge * Viridian Gym - Earth Badge
The episode in which Ash gets the Rainbow Badge is called "Pokémon Scent-sation."
At celadon city.
The boulder badge, the cascade badge, the thunder badge, the rainbow badge, the soul badge, the marsh badge, the volcano badge and the earth badge.
You will find Erika at the Celadon City Gym. She trains grass types and for winning you will receive the Rainbow Badge and TM21 which is Mega Drain.
You need the rainbow badge which you get a celadon city Hm cut is needed.
The 8 badges for Pokemon Red are: Boulder Badge, (Brock) Cascade Badge, (Misty) Thunder Badge, (Lt. Surge) Rainbow Badge, (Erika) Marsh Badge, (Sabrina) Soul Badge, (Koga) Volcano Badge, (Blaine) and Earth Badge. (Giovanni)