Securing a powerful Ground and Rock-type presence in the Hisui region often starts with tracking down and evolving Rhyhorn. As a staple of the franchise since the first generation, Rhyhorn and its evolutionary line—Rhydon and Rhyperior—offer significant physical bulk and offensive pressure. In Pokémon Legends: Arceus, the mechanics for evolution have shifted away from traditional methods, specifically regarding the need for trading, making it a more accessible process for those playing solo.

Finding Rhyhorn in the wilds of Hisui

Before focusing on the evolution process, locating a high-quality Rhyhorn is the necessary first step. In the Hisui region, Rhyhorn is primarily found in two major areas: the Crimson Mirelands and the Coronet Highlands.

In the Crimson Mirelands, Rhyhorn frequently spawns in Bolderoll Slope, Diamond Heath, and the Shrouded Ruins. These areas are accessible relatively early in the game. Bolderoll Slope is particularly notable as it often features several Rhyhorn wandering near the rocky outcroppings. The Diamond Heath spawns are also reliable, and players might occasionally encounter an Alpha Rhyhorn in this vicinity, which provides a significant head start in terms of levels and stats.

As players progress to the Coronet Highlands, Rhyhorn can be found near the Celestica Trail and the Sacred Plaza. The terrain here is more vertical, and Rhyhorn are typically seen patrolling the lower mountain paths or resting near large boulders. Observation suggests that weather conditions do not heavily restrict Rhyhorn spawns; they appear during the morning, day, evening, and night under most weather types, including sun, rain, and fog.

Catching a Rhyhorn requires a measured approach. Because they are aggressive and prone to charging, using heavy balls like Lead Balls or Gigaton Balls from behind can be effective. Alternatively, engaging them in battle with a Grass or Water-type Pokémon—to which they have a 4x weakness—can quickly lower their health, though care must be taken not to knock them out instantly.

Evolving Rhyhorn into Rhydon

The transition from Rhyhorn to Rhydon is a straightforward progression based on experience. Unlike some other species in Hisui that require specific items or environmental conditions, Rhyhorn follows a traditional leveling path.

To initiate the evolution, a Rhyhorn must reach Level 42. In Pokémon Legends: Arceus, Pokémon do not evolve automatically upon reaching the required level. Instead, a notification will appear in the satchel menu indicating that the Pokémon is "Ready to Evolve." Players must manually select Rhyhorn in their party and choose the "Evolve" option. This allows for more control over when the evolution occurs, which can be useful if a player is trying to complete specific Research Tasks that are easier to finish in the unevolved form.

Reaching Level 42 can be achieved through several methods. Regular battling against higher-level wild Pokémon in the Alabaster Icelands is efficient, as is participating in Massive Mass Outbreaks. Additionally, the use of Exp. Candies (S, M, or L) obtained from defeating Alpha Pokémon or completing requests can accelerate this process significantly. A Rhyhorn caught in the Coronet Highlands is often already close to this level, sometimes requiring only a few battles or a single Rare Candy to trigger the evolution prompt.

The Protector: The key to Rhyperior

The most significant hurdle in the evolutionary line is moving from Rhydon to the final form, Rhyperior. In previous Pokémon titles, this required trading Rhydon while it held a specific item called a Protector. However, Pokémon Legends: Arceus has eliminated the necessity of trading for evolution. Instead, the Protector is now used as a consumable evolution item, similar to a Fire Stone or Water Stone.

How to acquire a Protector

There are four primary methods to obtain a Protector in the Hisui region, each varying in terms of reliability and cost.

  1. The Trading Post in Jubilife Village: This is the most consistent method. Simona, located near the Galaxy Hall, sells various evolution items in exchange for Merit Points (MP). A Protector costs 1,400 MP. Players earn MP by finding and returning Lost Satchels dropped by other players (or NPCs if playing offline) throughout the various maps. Returning a single satchel typically rewards between 50 and 100 MP, meaning it takes approximately 15 to 20 satchels to afford one Protector.
  2. Ginter’s Specials at the Ginkgo Guild: Ginter, standing outside the Galaxy Hall, offers a rotating stock of rare items. He occasionally sells the Protector under the name "Unusual Armor" for 5,000 Pokédollars. His inventory changes every time the player catches 20 Pokémon, so it is worth checking back frequently if the player has excess currency.
  3. Space-Time Distortions: These random events that occur in various maps are a goldmine for evolution items. Once a distortion fully forms, various rare items spawn on the ground. Protectors can occasionally be found lying on the grass or dirt within these zones. While this method is free, it relies heavily on luck and the frequency of distortion spawns.
  4. Ursaluna Digging: After obtaining the ability to ride Ursaluna in the Crimson Mirelands, players can use the bear's sense of smell to find buried treasure. While extremely rare, it is possible to dig up a Protector. This is generally considered the least reliable method and is better viewed as a bonus rather than a primary farming strategy.

Completing the evolution into Rhyperior

Once a Protector has been secured and the player has a Rhydon in their party, the final evolution can proceed. There is no level requirement for this stage; a Rhydon of any level can evolve as long as the item is available.

To evolve, open the satchel and select the Protector. The game will highlight compatible Pokémon in the party. Select Rhydon and confirm the use of the item. An animation will play, and the Rhydon will transform into Rhyperior. This process consumes the Protector, so if a player intends to have multiple Rhyperiors for a living Pokédex, they will need to acquire multiple Protectors.

Rhyperior is a massive upgrade over its predecessors. It retains the Ground and Rock typing but gains a significant boost to its base Attack and Defense stats. With a base Attack that is among the highest in the game and physical bulk that allows it to survive powerful hits, it serves as an excellent anchor for many teams during the post-game content and legendary encounters.

Optimizing Rhyperior for combat

To make the most of an evolved Rhyperior, players should consider its nature and move set. Since Rhyperior is a physical powerhouse with very low Special Attack and Speed, the best natures are generally Adamant (+Attack, -Special Attack) or Impish (+Defense, -Special Attack). These natures lean into Rhyperior's strengths while sacrificing a stat it never uses.

Recommended Moveset

In the Hisui region, the move pool for Rhyperior is robust. Key moves to consider include:

  • High Horsepower: A powerful Ground-type move that serves as Rhyperior's primary STAB (Same Type Attack Bonus) option. It is more reliable than Earthquake in the context of this game's mechanics.
  • Stone Edge: The premier Rock-type move for physical attackers. While its accuracy is slightly lower, the high critical-hit ratio and raw power make it essential for dealing with Flying and Ice-type threats.
  • Megahorn: Learned via the Move Tutor, this Bug-type move provides excellent coverage against Grass and Psychic-type Pokémon that might otherwise threaten Rhyperior.
  • Stealth Rock: In Pokémon Legends: Arceus, Stealth Rock functions differently than in the mainline games, dealing damage over time and adding a "splintered" status. This is particularly useful for longer battles against Alpha Pokémon or Noble Pokémon.

Grit Items and Effort Levels

Because Rhyperior is a physical tank, focusing Grit items on HP, Attack, and Defense is highly recommended. Bringing these Effort Levels (ELs) to 10 will allow Rhyperior to withstand even super-effective moves from lower-level opponents and dish out massive damage in return. Investing in Speed is generally less efficient, as Rhyperior's base speed is low enough that it will likely go second in most turns regardless of investment, unless the Agile Style mechanic is used strategically.

The Alpha Shortcut

For players who wish to skip the early stages of the evolution line, catching an Alpha Rhydon is a viable alternative. An Alpha Rhydon can be found in the Coronet Highlands, specifically in the Sacred Plaza. This Pokémon usually appears around Level 60, meaning it is ready for immediate evolution into Rhyperior as soon as a Protector is obtained.

Alpha Pokémon come with the added benefit of having three of their Effort Levels already raised to level 3, saving the player some Grit items. They also often know "tutor moves" naturally, which can save Pokédollars at the Training Grounds. However, catching an Alpha Rhydon is significantly more difficult than catching a standard Rhyhorn. It requires the use of Oran Berries or Cake Lures to distract it, followed by a well-timed backstrike with an Ultra Ball or Gigaton Ball.

Research Tasks and the Pokédex

Evolving Rhyhorn is not just about battle prowess; it is also a requirement for completing the Pokédex research. The Rhyhorn research page includes tasks such as:

  • Number caught: Catching up to 25 Rhyhorn.
  • Number of heavy specimens caught: Identifying larger versions of the Pokémon.
  • Number defeated: Defeating Rhyhorn in battle (useful for those training other Pokémon).
  • Number defeated with Grass-type moves: Utilizing their 4x weakness to finish the task quickly.
  • Times you've seen it use Stealth Rock: Observing wild Rhyhorn or using the move with your own.
  • Number you've evolved: Evolving three members of the line will help reach Research Level 10 faster.

By the time a player has evolved a Rhyhorn into a Rhydon and then into a Rhyperior, they will likely have completed several of these tasks. For Rhydon and Rhyperior, the research tasks often involve using specific moves like Stone Edge or High Horsepower in Agile or Strong styles. Completing these tasks is essential for players aiming to encounter the final challenges of the game, as reaching Research Level 10 for every Pokémon is a prerequisite for the Shiny Charm.

Strategic Importance in Hisui

In the context of the Hisui region's ecosystem, the Rhyhorn line occupies a specific niche. While they face competition from other Ground-types like Mamoswine or Ursaluna, Rhyperior’s unique Rock/Ground typing allows it to resist Normal, Fire, Poison, and Flying moves effectively. Its immunity to Electric moves remains a critical tactical advantage, especially when navigating areas like the Coronet Highlands where Electric-type Pokémon are prevalent.

However, players must remain cautious of the double weaknesses to Water and Grass. In the Hisui region, where wild Pokémon can sometimes attack the player character directly, a Rhyperior can be a life-saving shield. Its sheer size and presence in the field are representative of the rugged, untamed nature of the region.

Whether the goal is to complete the Pokédex, defeat the powerful Alpha Pokémon roaming the lands, or simply to have a reliable physical wall, the process of evolving Rhyhorn is a rewarding endeavor. By understanding where to find the necessary items and how to manage the new evolution mechanics of Pokémon Legends: Arceus, any trainer can successfully add this mountain-shattering powerhouse to their roster.