If you picked Charmander as your starter in Pokémon Fire Red and Leaf Green, you already know the pain that awaits you at Pewter City Gym. Brock and his Rock-type squad will make short work of a Fire-type early on, and most of the Pokémon available in the opening routes don't help much either. That's exactly where Mankey comes in. This feisty Fighting-type is one of the best early catches in the entire game, and knowing where to find it can completely change your first Gym experience.
Where Can You Find Mankey in Pokémon Fire Red & Leaf Green?
Mankey appears in multiple locations across Kanto, but the most important one is available almost immediately after you leave Pallet Town.
Mankey on Route 22
Route 22: The Earliest and Best Spot
Route 22 sits just west of Viridian City, and you can access it before you've even tackled your first Gym. While the route technically leads toward Victory Road and the Elite Four, you don't need to push anywhere near that far. Just step into the tall grass and start searching.
The encounter rate here is genuinely generous. Mankey has a 45% chance of appearing on Route 22, which is more than double the 20% encounter rate it had in the original Pokémon Red and Blue. In practical terms, you won't be grinding through endless Rattata encounters for long.
tip
Head to Route 22 before challenging Brock. Catching a Mankey here gives you a Fighting-type advantage that makes the Pewter City Gym significantly easier, especially if you chose Charmander.
Additional Mankey Locations Later in the Game
If you miss Mankey on Route 22 or simply want another one, it also appears in the following areas:
The Route 3, Route 4, and Rock Tunnel encounters all come after you've already beaten Brock, so they're less critical. Route 23 is the last location where Mankey appears, but by that point in the story you're practically at the Elite Four, making it a novelty catch rather than a team staple.
warning
Don't wait until Route 23 to catch your Mankey. By then, you'll have missed every major moment where its Fighting-type moves make the biggest difference.
Why Is Mankey Worth Catching Early?
Mankey is a Fighting-type Pokémon, which gives it a natural advantage over Brock's Rock and Ground-type party. Even at a low level, moves like Low Kick can deal solid damage to his Geodude and Onix. For players running Charmander, this is practically a necessity rather than a luxury.
Beyond Brock, the Fighting typing stays relevant throughout Kanto thanks to resistances against Dark, Rock, and Bug-type attacks. Just keep in mind that both Mankey and its evolution are weak to Psychic and Flying-type moves, so you'll want to swap out in those matchups.
Fighting-type edge vs. Brock
How Do You Evolve Mankey Into Primeape?
Mankey evolves into Primeape at level 28. The evolution is purely level-based, so there are no special items or trade requirements to worry about.
tip
In Pokémon Scarlet and Violet, Primeape gains a further evolution into Annihilape. However, that evolution is not available in Fire Red or Leaf Green, making Primeape the final form of this line in these games.Primeape carries forward everything that makes Mankey useful. It's still a pure Fighting-type, shares the same resistances to Dark, Rock, and Bug, and keeps the same Psychic and Flying vulnerabilities. The key difference is a meaningful bump in Attack and Speed stats, making it a much more threatening physical attacker as the game progresses.
Unless you do serious grinding on Route 22 before challenging Brock, you almost certainly won't have a Primeape in time for that first Gym battle. A lower-level Mankey still gets the job done, though, so don't feel pressured to overlevel before moving on.
Mankey vs. Other Early-Game Fighting Options: What Should You Know?
In Fire Red and Leaf Green, early Fighting-type options are limited. Mankey stands out because of its high availability on Route 22 and the fact that it can be caught before any Gym battle. Most other Fighting-type Pokémon either appear much later or require trading.
Mankey wins the early-game comparison handily. Machop appears later and at a lower encounter rate, while Hitmonlee and Hitmonchan aren't available until much further into the story.