Pokemon Legends: Arceus - The 5 Best Rock-Type Pokemon (& Where to Find Them)

gamerant.com:

Like the very stones on which they're based, Rock-type Pokemon are known primarily for their sturdiness, though also their ability to hit like a brick. Pokemon Legends: Arceus players looking to build a well-balanced team will therefore want to add one to their team right away, though figuring out which one to choose is not so easy.

Pokemon Legends: Arceus — The Best Ghost-Type Pokemon (& Where to Find Them)

While previous games have enabled players to simply use their existing knowledge, the Hisui Pokedex has seen quite a few cuts. As a result, the best Rock-types in Pokemon Legends: Arceus are a little different from the ones in other Pokemon games, with one or two unlikely candidates making the cut.

Probopass is a Rock / Steel-type Pokemon, which explains why it has such monstrously high defensive stats. It does have three major weaknesses (Fighting, Ground, and Water), but, when up against just about anything else, it's never at risk of being knocked out quickly. This bodes well, as Probopass' Speed and attacking stats are all on the low side, meaning that it needs time to dish out any substantial amount of damage. With access to moves like Power Gem and Flash Cannon though, it is much better equipped than most other sturdy Pokemon, at least in the offensive department, anyway. Probopass is best with a Sassy nature.

There's an Alpha Probopass in the Primeval Grotto area of the Coronet Highlands. Players can also find its unevolved form Nosepass there, as well as in the Celestica Ruins area of the same region. Nosepass can be evolved into Probopass simply by taking it to the Coronet Highlands region or by using a Thunder Stone on it. Those in need of a Thunder Stone can trade one for Merit Points at the exchange counter