Route description
Route 101, the first route which Trainers from Littleroot Town traverse on, is home to a wide array of different Pokémon. Hence, Professor Birch often performs his studies here. Heading north from Littleroot, the route forms a "U", turning north and immediately backpedaling east near the first patch of grass. A ledge blocks the way north, letting only southbound travelers avoid the grass. Route 101 then turns north into another patch of grass as it heads west. At this point, the path travels through the last of three grass patches. Route 101 then turns north as it enters Oldale.
At the start of the game, the player meets Professor Birch as he is being attacked by a wild Pokémon. The player then battles the Pokémon with either a Treecko, Torchic, or Mudkip, found in Poké Balls in the Professor's bag. Whichever of the three Pokémon that is chosen will become the player's first partner Pokémon.
In Pokémon Omega Ruby and Alpha Sapphire, after battling with Brendan/May on Route 103 and returning to the lab, the player will receive the DexNav application at the entrance to Route 101. Near Oldale Town, Brendan/May will explain the mechanics of hidden Pokémon, then a hidden Poochyena will appear. If the player succeeds in sneaking up to the Pokémon, the encounter will be a Poochyena that has an elemental fang attack as its first move; if the player scares it away, enters another battle, moves too far away, or leaves the area through a transition, the Poochyena will not reappear.
In Pokémon Omega Ruby and Alpha Sapphire, Professor Birch will give the player more first partner Pokémon from other regions if the player has completed certain milestones. The following first partner Pokémon are available:
If the above conditions are met, then the next time the player exits their house in Littleroot Town, Professor Birch will be heard yelling for help from Route 101. When the player arrives to help, they will be allowed to choose one of the first partner Pokémon.
Items
Pokémon
Generation III
| Pokémon
|
Games
|
Location
|
Levels
|
Rate
|
|
|
R
|
S
|
E
|
|
2-3
|
10%
|
|
|
R
|
S
|
E
|
|
2-3
|
45%
|
|
|
R
|
S
|
E
|
|
2-3
|
45%
|
|
|
R
|
S
|
E
|
|
2-3
|
10%
|
|
|
R
|
S
|
E
|
|
2-3
|
45%
|
| First partner Pokémon
|
|
|
R
|
S
|
E
|
|
Gift
|
|
5
|
One
|
|
|
R
|
S
|
E
|
|
|
Gift
|
|
5
|
One
|
|
|
R
|
S
|
E
|
|
|
Gift
|
|
5
|
One
|
| A colored background means that the Pokémon can be found in this location in the specified game. A white background with a colored letter means that the Pokémon cannot be found here.
|
Generation VI
Wild Pokémon cannot break out of Poké Balls thrown at them here.
| Pokémon
|
Games
|
Location
|
Levels
|
Rate
|
|
|
OR
|
AS
|
|
2
|
20%
|
|
|
OR
|
AS
|
|
2
|
40%
|
|
|
OR
|
AS
|
|
2
|
40%
|
| Horde Encounter
|
|
|
OR
|
AS
|
|
Horde Encounter
|
|
2
|
5%
|
|
|
OR
|
AS
|
|
|
Horde Encounter
|
|
2
|
95%
|
Exclusively as hidden Pokémon
After defeating or capturing Groudon/Kyogre
|
|
|
OR
|
AS
|
|
2
|
??%
|
|
|
OR
|
AS
|
|
2
|
??%
|
|
|
OR
|
AS
|
|
2
|
??%
|
| First partner Pokémon
|
|
|
OR
|
AS
|
|
Gift
|
|
5
|
One
|
|
|
OR
|
AS
|
|
|
Gift
|
|
5
|
One
|
|
|
OR
|
AS
|
|
|
Gift
|
|
5
|
One
|
Johto first partner Pokémon
After speaking to Zinnia after first entering the Hall of Fame
|
|
|
OR
|
AS
|
|
|
Gift
|
|
5
|
One
|
|
|
OR
|
AS
|
|
|
Gift
|
|
5
|
One
|
|
|
OR
|
AS
|
|
|
Gift
|
|
5
|
One
|
Unova first partner Pokémon
After completing the Delta Episode
|
|
|
OR
|
AS
|
|
|
Gift
|
|
5
|
One
|
|
|
OR
|
AS
|
|
|
Gift
|
|
5
|
One
|
|
|
OR
|
AS
|
|
|
Gift
|
|
5
|
One
|
Sinnoh first partner Pokémon
After entering the Hall of Fame for the second time
|
|
|
OR
|
AS
|
|
|
Gift
|
|
5
|
One
|
|
|
OR
|
AS
|
|
|
Gift
|
|
5
|
One
|
|
|
OR
|
AS
|
|
|
Gift
|
|
5
|
One
|
| A colored background means that the Pokémon can be found in this location in the specified game. A white background with a colored letter means that the Pokémon cannot be found here.
|
Special encounters
Pokémon Ruby and Sapphire
A Poochyena appears here as part of the story. If it reduces the player Pokémon's HP to 20% or below, it will flee. Critical hits don't occur in this battle.
Pokémon Emerald
A Zigzagoon appears here as part of the story. If it reduces the player Pokémon's HP to 20% or below, it will flee. Critical hits don't occur in this battle.
Pokémon Omega Ruby and Alpha Sapphire
A Poochyena appears here as part of the story.
A Wurmple is coded to always be the first encounter in the tall grass after three consecutive steps.
A special Poochyena appears here as a hidden Pokémon. Its moveset depends on the first partner Pokémon chosen by the player.
 If Treecko was chosen
|
 If Torchic was chosen
|
 If Mudkip was chosen
|
|
|
|
|
Layout
Music
If Treecko was chosen
If Torchic was chosen
If Mudkip was chosen
