Only a few Pokémon see changes :
Both of the “mascot” Pokémon, with Pikachu having its base stats increased to match the Let’s Go Partner Pikachu, and Eevee … basically getting completely reworked.
The Eeveelutions also all get a special little something with these changes in the form of many new moves, and Flareon gets an adjustment to its stat allocation.
A few other Pokémon have been changed, such as Stantler’s Legends Arceus move being given to it as a learnable move, and no-trade evolution methods being added.
Pikachu
Pikachu has been adjusted to have Base Stats matching the Partner version (with a 430 total) :
| HP | Atk | Def | SpAtk | SpDef | Spd |
| 45 | 80 | 50 | 75 | 60 | 120 |
Pikachu Base Stats Update
Pikachu also gains a few new moves of rough-equivalence to the Partner moves :
| Move Learned | Level |
| Fly | 40 |
| Surf | 45 |
| Extreme Speed | 50 |
| Volt Tackle | 60 |
Pikachu Updated Moves
The special event Pikachu raids (New Special Raids) are all the alternate Cap-form Pikachu. The only difference between these and normal Pikachu is that these Cap-form Pikachu cannot evolve; they are, however, given an empty evolution, allowing the player to make use of Eviolite if they would like.
Eevee and the Eeveelutions
The design principle behind the Eevee (and subsequent Eeveelution) changes is to bring it more in line with the Let’s Go Partner Eevee and gaining thematic changes to bring some of the feel of Koharu’s Eevee from Pokémon Journeys into Compass — matching the increasing notion of Eevee’s versatility (also its genetic instability) and the proclivity toward the types that they can evolve into.
Basically, we’re callin’ this Journeys Eevee~
Eevee
New moves are given that match the types of the Eeveelutions, and all new moves to be learned when evolving into an Eeveelution. Eevee also sees an increase in its Base Stats, and Eevee’s Hidden Ability, Anticipation, has been changed to Protean. Additionally, Espeon, Umbreon, and Sylveon have new evolution methods — partly for thematic reasons, but primarily for a quality of life bump for people who might like to level their Eevee without having to interrupt its evolution frequently.
Eevee’s Base Stats are increased to match the Partner Eevee’s total, 435, but are modified slightly.
| HP | Atk | Def | SpAtk | SpDef | Spd |
| 65 | 75 | 70 | 75 | 80 | 70 |
Eevee Base Stats Update
Eevee’s moveset sees significant changes, losing many of its standard level-up moves in favor of new moves thematically designed around the Eeveelutions. The moves chosen are in the “generally kind of weak” tier, but might have some uses in some setups later into the game.
| Move Learned | Level |
| Tackle | 1 |
| Tickle | 1 |
| Baby-Doll Eyes | 1 |
| Yawn | 1 |
| Helping Hand | 1 |
| Quick Attack | 5 |
| Copycat | 10 |
| Disarming Voice | 13 |
| Icy Wind | 16 |
| Chilling Water | 19 |
| Flame Charge | 22 |
| Electroweb | 25 |
| Snarl | 28 |
| Razor Leaf | 31 |
| Psybeam | 34 |
| Charm | 37 |
| Baton Pass | 40 |
| Tearful Look | 45 |
| Teeter Dance | 50 |
| Mimic | 60 |
Eevee Updated Moves
None of the Eeveelutions can learn any of these moves outside of the level 1 moves, so if there’s one of these you definitely want on your Eeveelution, you’ll need to learn it as an Eevee before evolving.
Evolution Changes
Some Eeveelutions have had their evolution method adjusted, to be consistent, using evolution stones across the board now. The changes are :
| Eeveelution | Stone Required |
| Espeon | Sun Stone |
| Umbreon | Moon Stone |
| Sylveon | Shiny Stone |
Eeveelution Evolution Update
All other Eevee evolution methods remain the same.
This change retains the use of Eviolite on Eevee, and acts as a Quality of Life change to raise their levels to learn specific moves without having to go through the slow evolution cancel event frequently.
Eeveelutions
Flareon is the only Eeveelution to get any stat adjustment — their allocation was unfortunately quite weak, causing them to be taken out far too easily for such a slow (if powerful) attacker. This change keeps to the theme of “slow but hits hard” while giving them a better defensive setup, hopefully allowing them to take a hit more regularly and actually participate in battles.
| HP | Atk | Def | SpAtk | SpDef | Spd |
| 110 | 130 | 65 | 60 | 95 | 65 |
Flareon Base Stats Update
All Eeveelutions also have new movesets :
All Eeveelutions have access to the level 1 moves that Eevees have, but all the other moves they can learn only come from their evolved forms, so if there are moves an Eevee knows that you would like your Eeveelution to have, you will need to learn it as an Eevee first!
Every Eeveelution learns a new move when they evolve, and then at consistent levels, they learn a variety of moves that are close to the same moves they could learn in vanilla, but with a few legacy / underused moves replaced or outright removed. Additionally, each Eeveelution can learn the typed move the Eevee could learn matching that Eeveelution’s type (e.g. Vaporeon can learn Chilling Water, since that is the Water-type move Eevees learn, at the same time as when an Eevee would normally be able to learn it).
| Level | Vaporeon | Jolteon | Flareon | Espeon |
| Evolve | Brine | Shock Wave | Fire Fang | Expanding Force |
| 10 | Haze | Pin Missile | Work Up | Calm Mind |
| 19 | Chilling Water | — | — | — |
| 20 | Aqua Ring | Nuzzle | Fire Spin | Psychic Terrain |
| 22 | — | — | Flame Charge | — |
| 25 | — | Electroweb | — | — |
| 30 | Acid Armor | Charge | Flame Wheel | Power Gem |
| 34 | — | — | — | Psybeam |
| 35 | Flip Turn | Agility | Crunch | Morning Sun |
| 40 | Life Dew | Volt Switch | Fire Lash | Guard Split |
| 45 | Aurora Beam | Thunderbolt | Screech | Psych Up |
| 50 | Whirlpool | Rising Voltage | Double-Edge | Extrasensory |
| 55 | Surf | Electric Terrain | Flare Blitz | Freezing Glare |
| 60 | Hydro Pump | Thunder | Raging Fury | Future Sight |
Eeveelution Updated Moves
| Level | Umbreon | Leafeon | Glaceon | Sylveon |
| Evolve | Payback | Grassy Glide | Frost Breath | Draining Kiss |
| 10 | Mean Look | Sweet Scent | Powder Snow | Aromatic Mist |
| 13 | — | — | — | Disarming Voice |
| 16 | — | — | Icy Wind | — |
| 20 | Night Shade | Sunny Day | Mist | Attract |
| 28 | Snarl | — | — | — |
| 30 | Confuse Ray | Grassy Terrain | Snowscape | Dazzling Gleam |
| 31 | — | Razor Leaf | — | — |
| 35 | Moonlight | Synthesis | Mirror Coat | Misty Terrain |
| 40 | Cosmic Power | Grass Knot | Freeze-Dry | Skill Swap |
| 45 | Foul Play | Leech Seed | Ice Beam | Fairy Lock |
| 50 | Glare | Petal Blizzard | Sheer Cold | Strength Sap |
| 55 | Dark Pulse | Leaf Blade | Aurora Veil | Moonblast |
| 60 | Night Daze | Solar Blade | Blizzard | Springtide Storm |
Eeveelution Updated Moves
Stantler and Wyrdeer
In order for Stantler to evolve into Wyrdeer using a similar method to its evolution method in Pokémon Legends Arceus, Stantler was given Psyshield Bash as a learnable move at level 25. This is a few levels after it would normally learn it in PLA, but is slightly more in-balance relatively.
Leveling as a Stantler while knowing Psyshield Bash will cause it to evolve into Wyrdeer.
Gastrodon
East Sea Gastrodon can now learn Earth Power at level 39, same as West Sea, matching previous gens.
Other Evolution Changes
Many Pokémon that would be otherwise unavailable are given new evolution methods so that they can be obtained in Compass.
Pokémon that require trading or playing with someone else have new evolution methods :
| Pokémon | Method | Result |
| Slowpoke | Level up while holding Destiny Knot | Slowking |
| Haunter | Use Dusk Stone | Gengar |
| Scyther | Level up while holding Destiny Knot | Scizor |
| Finizen | Level up while holding Power Bracer @ Level 38 and above | Palafin |
No-Trade or Co-Op Evolution Updates
Pokémon that normally would evolve into a Hisuian form from a non-Hisuian Pokémon have new evolution methods, all of which involve holding a Strange Mirror while leveling at or above a certain point. The exact values are :
| Pokémon | Method | Result |
| Bergmite | Level up @ 37 and above | Hisuian Avalugg |
| Dartrix | Level up @ 36 and above | Hisuian Decidueye |
| Dewott | Level up @ 36 and above | Hisuian Samurott |
| Goomy | Level up @ 40 and above | Hisuian Sliggoo |
| Quilava | Level up @ 36 and above | Hisuian Typhlosion |
| Rufflet | Level up @ 54 and above | Hisuian Braviary |
| Scyther | Level up @ 30 and above | Kleavor |
| Ursaring | Level up @ 40 and above | Ursaluna |
Pseudo-paradox Hisuian Evolution Updates (Must be holding Strange Mirror)
Other Hisuian Pokémon evolve without the use of Strange Mirror. Evolution methods that relied on specific-Legends mechanics were not transferred over entirely, so their evolution method is a little different :
| Pokémon | Method | Result |
| Hisuian Qwilfish | Level up while knowing Barb Barrage | Overqwil |
| Hisuian Sliggoo | Level up @ 50 and above while in the rain | Hisuian Goodra |
| Petilil | Use a Shiny Stone | Hisuian Lilligant |
| Stantler | Level up while knowing Psyshield Bash | Wyrdeer |
| White-Striped Basculin | Take 295 points in damage from recoil (without fainting), then level up | Basculegion |
Standard Hisuian Evolution Updates
There is one other evolution change :
| Pokémon | Method | Result |
| Pikachu | Use Shiny Stone | Alolan Raichu |
Other Evolution Change