Rhydon evolves when the "Protector" is held and the Pokemon is traded.
to evolve rhydon you need a protector. I think you can get one on stark mountain. Then you have to give it to Rhydon and trade with a friend.
Trade it with the Protector on it
You need to trade a rhydon while it holds a protector item to make it evolve to rhyperior.
You have to get the Moon stone.
Give it to a Rhydon, and trade it. It should evolve into Rhyperior.
You can evolve Rhydon into Rhyperior by trading...P.S Note:- Rhydon will evolve into Rhyperior in the following games : Diamond & Pearl and Platinum...Cause Rhyperior can be seen only in sinnoh region and onlydiamond & pearl and platinum contains sinnoh region pokemons..
To evolve rhydon you must equip it with the protector and trade it, and probably get it back.
You cannot get the protector to evolve Rhydon in Pokemon Red version, because Rhydon's ability to evolve with a protector into Rypherior is only available in the latest versions: Pokemon Diamond, Pearl, and Platinum. It is impossible to even get a protector in Pokemon Red version, let alone evolve Rhydon.
you give rhydon the protector then you trade him to a friend then get the friend to trade him back and you have your self a rhyperior
Rhyhorn is one of the Pokemon that take a while to evolve. You have to level it up to level 42 in order for it to evolve into Rhydon. If you give Rhydon a protector and trade him, then he evolves into Rhyperior.
Rhydon will not evolve in leafgreen or firered you have to migrate it to diamond, pearl or platinum then trade it to evolve it.
You have to trade it while holding a proctector item.