Brock through walls

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Brock Through Walls (path manipulation walk through walls) is a walk through walls glitch in Pokémon Red, Green, Blue, and Yellow. It is popular in speedrunning Pokémon Red and Blue.

The "walk through walls" GameShark code has always been fun and useful to people. Contrary to popular belief, a similar effect is possible without the use of a game-altering device via a glitch. It is possible to perform the "Brock Through Walls" glitch very early in the games (except in Pokémon Yellow because the Youngster cannot be skipped in this version).

As it shouldn't be possible to talk to the Youngster from the right, the developers never programmed a path for the Youngster to follow when the player is right of the Youngster. When talking to him, the game looks for the player's coordinates but often never finds them, resulting in a softlock.

However, the player is able to write some pseudo-data in RAM representing the player's coordinates (which in this case should be $10 $24), which leads the game into using the next two bytes as a path pointer provided that the coordinates appear at an address at xxx2, xxx6, xxxA, or xxxE.

Particular paths may overwrite the 'disallowed buttons' variable, allowing the player to walk through walls, similar to what happens in the glitch walk through walls trick (museum guy method).

Requirements

The player must have performed a method of the Pewter Gym skip glitch, or have otherwise skipped Pewter Gym through another means such as a wrong warp by manipulating item 36's quantity (exit destination) in the expanded items pack.

The latter is possible if an item quantity is manipulated to 255 (e.g. by using Missingno. to duplicate it by 128 first, reducing the quantity to 127 and duplicating it to 255). Two methods to do this without defeating Brock include the Cable Club escape glitch with Missingno. or after trading a Pokémon with "-" as the first move from Red/Blue to Yellow (as CoolTrainer corruption can freeze the game outside of particular places such as Diglett's Cave in Red/Blue but not Yellow). With "-" corruption, it is possible to corrupt the enemy Pokémon into a Missingno. by opening the Pokémon menu before opening and closing the Fight menu/scrolling past "-".

Japanese Pokémon Red, Green, and Pokémon Blue (Japanese)

• Have a Rattata (or any Pokémon with the same mini-sprite) in the third party slot.
• Have a Charmander (or any Pokémon with the same mini-sprite) in the fourth party slot.

Once this setup is done, flash the Pokémon menu at least once.

International Pokémon Red and Blue

Have a Bulbasaur meeting the following requirements :

• It must be level 8.
• It must be the last Pokémon in your party.
• It must know exactly three attacks :
  • The second attack's PP must be exactly 16.
  • The third attack's PP must be exactly 36.

Once this is done, flash Bulbasaur's stat screen.

Or it is possible to do the following instead :

• The first Pokémon's Special stat should be 16.
• The second Pokémon should be a Pidgey with 15 HP left.
• However, there should be no Rattata mini-sprite in the first two positions, or else the game will softlock.

Procedure

Once the player stands on tile right from the Youngster and performed to correct action (listed in the corresponding Requirement sub-section):

1. Talk to the Youngster, and close his dialog.
2. You will walk automatically and the menu should keep popping up. Hold B when the menu is closed to walk around in any direction.

Guide music in a building sub-glitch

If the player walks into Pewter Museum with this glitch active, it is possible for the guide music to remain playing.

YouTube video by ChickasaurusGL

Video Demonstration

YouTube video by ChickasaurusGL

See also

• Walk through walls trick (ledge method).
• Walk through walls trick (museum guy method).
• Walk through walls trick (international Select glitch method)
• Walk through walls trick (Select glitch method).

External links

• Glitch City Laboratories Forums thread.