You will find several evolution items that you need to acquire in Pokémon Legends: Arceus. These items are useful to give to your Pokémon so that they reach new evolutions. Several Pokémon require specific items to evolve, such as Rhydon in Rhyperior. You will need to use the Protector item to evolve Rhydon. In this guide, we will cover where you can find the Protector in Pokemon Legends: Arceus.
You can find the Protector in various places. The best way to find it is to look for the trading post in Jubilife Village. Head there and talk to Simona. It has various items available to you, and the Protector is one of them. You can purchase these items using Merit Points, which you will receive each time you turn in a Lost Satchel that you find in the world. It contains items that another player lost while exploring and a Pokémon attacked them.
Alternatively, you can also find the Protector by riding Ursaluna and using it to find treasure. There is a chance it will lead you to a Protector, or you can find one in a space-time warp. However, both methods are random.
When you have it, give it to your Rhydon and it will evolve into a Rhyperior.