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 Fun with The Mew Glitch 
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O.K., I'm going to assume you know how to perform the Mew Glitch.

- You can use the Mew Glitch to obtain any PKMN in the game.

If you're not a geek, you don't wank to read this. :)

When you use Fly to get away from the Gambler, the game somehow "remembers" that a battle is supposed to be taking place on Route 8. This is what causes your Start button to stop working. The rest of the trick hinges on a twelve-byte section of memory, starting at memory location CD22 in Yellow (CD23 in Red/Blue), which contains the stats of the last Pokémon you fought. After you battle the Youngster, it will have these hexadecimal values:

8E 11 00 3C 00 1E 00 1D 00 1C 00 15

The first byte (8E) seems to be the same for all battles.
The second byte (11) is the enemy's level (17 in decimal).
The next ten bytes are the enemy's stats (HP/Attack/Defense/Speed/Special). Each stat takes up two bytes.
Additionally, this section of memory is surrounded by eight bytes on each side, which all have the value 07.

The last byte (15) in Yellow memory location CD2D (CD2E in Red/Blue) is the important one. It is the "least significant byte" of the enemy Pokémon's Special stat; in this case, it means that the enemy has a Special of 21 in standard decimal notation.

When you return to Route 8, the game tries to resume the battle that was interrupted before. For reasons unknown, it borrows byte CD2D to use as the species identifier for the enemy Pokémon, and the next byte to use as its level. If the last battle you fought was with the Youngster, these bytes will be 15 and 07. Since Mew's hexadecimal identifier is 15, you will fight a Level 7 Mew.

Now that you know how the trick works, you can use it to catch other Pokémon. Fighting the Youngster will always result in a Mew encounter because his Slowpoke has a Special of 21 (15 in hex). But if you fight something else before returning to Route 8, it will change which Pokémon you encounter.

Let's say you foolishly choose a starting Pokémon other than Bulbasaur and want to make up for it. Bulbasaur's hex number is 99, which converts to 153 in decimal. Now, you could fight a wild Pokémon with a Special of 153, but the only place to find that is on a Level 64 Chansey in the Unknown Dungeon, and those Chansey are quite rare. Worse, they only have a one-in-sixteen chance of having the right Special. Fortunately, there is a solution: Ditto's Transform, which copies the stats of the opponent.

This means that you can catch any Pokémon in the game by following these steps:

Catch/raise a Pokémon with the proper Special stat (153 for Bulbasaur).

Fly away from the Gambler battle.

Fight any trainer that can see you from a distance and walk up to you. (This is necessary to both unlock your Start button and trigger the Route 8 battle.)

Find a wild Ditto and let it Transform into your Pokémon with the proper Special.

Beat the Ditto (or just run away) and immediately fly to Lavender Town without fighting anything else.

Enter Route 8, and Bulbasaur (or whatever) will appear.

Note that since only the least significant of the two Special bytes is used for this, you can also add 256 to the values listed above and use that Special to get the same Pokémon. This is important because there are a few Pokémon, such as Kangaskhan, whose identifying value is lower than the minimum Special that any Pokémon can have. In Kangaskhan's case, you can find her by using a Special of 258 (2 + 256).

Also note that when you perform this trick, any trainers you fight after the Gambler will be "used up." Make sure you have enough unused trainers to catch all the Pokémon you want! Fortunately, the Gambler can be used to initiate the trick an unlimited number of times.

Code:
Name         Hex  Dec
----------   ---  ---
Bulbasaur     99  153
Ivysaur       09    9
Venusaur      9A  154
Charmander    B0  176
Charmeleon    B2  178
Charizard     B4  180
Squirtle      B1  177
Wartortle     BC  188
Blastoise     1C   28
Caterpie      7B  123
Metapod       7C  124
Butterfree    7D  125
Weedle        70  112
Kakuna        71  113
Beedrill      72  114
Pidgey        24   36
Pidgeotto     96  150
Pidgeot       97  151
Rattata       A5  165
Raticate      A6  166
Spearow       05    5
Fearow        23   35
Ekans         6C  108
Arbok         2D   45
Pikachu       54   84
Raichu        55   85
Sandshrew     60   96
Sandslash     61   97
Nidoran(F)    0F   15
Nidorina      A8  168
Nidoqueen     10   16
Nidoran(M)    03    3
Nidorino      A7  167
Nidoking      07    7
Clefairy      04    4
Clefable      8E  142
Vulpix        52   82
Ninetales     53   83
Jigglypuff    64  100
Wigglytuff    65  101
Zubat         6B  107
Golbat        82  130
Oddish        B9  185
Gloom         BA  186
Vileplume     BB  187
Paras         6D  109
Parasect      2E   46
Venonat       41   65
Venomoth      77  119
Diglett       3B   59
Dugtrio       76  118
Meowth        4D   77
Persian       90  144
Psyduck       2F   47
Golduck       80  128
Mankey        39   57
Primeape      75  117
Growlithe     21   33
Arcanine      14   20
Poliwag       47   71
Poliwhirl     6E  110
Poliwrath     6F  111
Abra          94  148
Kadabra       26   38
Alakazam      95  149
Machop        6A  106
Machoke       29   41
Machamp       7E  126
Bellsprout    BC  188
Weepinbell    BD  189
Victreebell   BE  190
Tentacool     18   24
Tentacruel    9B  155
Geodude       A9  169
Graveler      27   39
Golem         31   49
Ponyta        A3  163
Rapidash      A4  164
Slowpoke      25   37
Slowbro       08    8
Magnemite     AD  173
Magneton      36   54
Farfetch'd    40   64
Doduo         46   70
Dodrio        74  116
Seel          3A   58
Dewgong       78  120
Grimer        0D   13
Muk           88  136
Shellder      17   23
Cloyster      8B  139
Gastly        19   25
Haunter       93  147
Gengar        0E   14
Onix          22   34
Drowzee       30   48
Hypno         81  129
Krabby        4E   78
Kingler       8A  138
Voltorb       06    6
Electrode     8D  141
Exeggcute     0C   12
Exeggutor     0A   10
Cubone        11   17
Marowak       91  145
Hitmonlee     2B   43
Hitmonchan    2C   44
Lickitung     0B   11
Koffing       37   55
Weezing       8F  143
Rhyhorn       12   18
Rhydon        01    1
Chansey       28   40
Tangela       1E   30
Kangaskhan    02    2
Horsea        5C   92
Seadra        5D   93
Goldeen       9D  157
Seaking       9E  158
Staryu        1B   27
Starmie       98  152
Mr. Mime      2A   42
Scyther       1A   26
Jynx          48   72
Electabuzz    35   53
Magmar        33   51
Pinsir        1D   29
Tauros        3C   60
Magikarp      85  133
Gyarados      16   22
Lapras        13   19
Ditto         4C   76
Eevee         66  102
Vaporeon      69  105
Jolteon       68  104
Flareon       67  103
Porygon       AA  170
Omanyte       62   98
Omastar       63   99
Kabuto        5A   90
Kabutops      5B   91
Aerodactyl    AB  171
Snorlax       84  132
Articuno      4A   74
Zapdos        4B   75
Moltres       49   73
Dratini       58   88
Dragonair     59   89
Dragonite     42   66
Mewtwo        83  131
Mew           15   21


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Sat Jun 12, 2010 7:32 pm
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Sun Jun 13, 2010 12:32 am
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LOL. Now I really feel like I need to say,"Hope this helps!"

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Sun Jun 13, 2010 1:22 am
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Use the Mew glitch earlier:

Buy an escape rope before you go to Rock Tunnel, or have a pokemon that knows Dig. Do the Mew glitch using any trainer in RT, then go back to the youngster on the way on Bill's house and fight him so you can get the Mew. Then just go back to Rock Tunnel. You can do this even earlier in Pewter City.

An even EARLIER way:

This only works on Red and Blue. You can't get Mew, unless you have a move that decreases special stats, which you don't. Buy an escape rope. First, What you want to do is step in front of the kid who'll lead you to Pewter Gym. He will start talking to you. When he says "Follow me!", press B to exit and immediately press START. If you did it correctly, you will have paused the game without you two moving. Save your game and reset. When you load your game again, he will try to lead you to Pewter Gym, but will fail miserably.

Go back to where the kid was when he's done going nowhere, and you'll see he isn't there. Stand where he stood, save your game, reset. When you load your game again you will be on top of the kid. Simply walk to the right and you have skipped
Pewter Gym!

Go to MT. Moon and do the Mew Glitch with a trainer there, but use the escape rope. You will teleport back to Pewter's PKMN Center. Fight Brock, win, and Go back to Mt. Moon and fight whoever! (You can't get Mew.)

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Sun Jun 13, 2010 2:26 pm
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incredably well done.

you deserve a ribbon and a b$@wj@B or a really hot chick for your troubles xD

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Sat Jun 19, 2010 3:16 pm
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@KE: I think all of the above.

Anyways, I am going to start documenting every trainer in RBY, and what PKMN they generate using the Mew Glitch for sake of convenience. The only exceptions are:

The first few battles with Gary
Brock (Yellow only because of the glitch that was fixed in Yellow)

The only one I have documented so far:

Youngster on Route 17 - Mew

Is anyone willing to help me?

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Wed Aug 04, 2010 8:36 pm
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I would, but idk jack **** about programming, sorry man. Keep up teh good work :)

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Thu Aug 26, 2010 5:31 pm
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Damn that is some heavy technical knowledge, I feel like a dumbass now haha XP
But wow, I noticed the hex numbers seem to be the codes put into the gameshark to make any pokemon appear in the wild anywhere, so basically this is gamesharking a pokemon without the gameshark. BADASS! I may try this in my red seeing as I lost my damn gameshark XP

Does it have to be the gambler and the youngster or could you use other sets of trainers? On youtube it seemed as though when the video makers used a different set of trainers other than the gambler and the youngster it resulted in a glitch pokemon.

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Tue Sep 14, 2010 9:40 pm
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The Youngster by Bill isn't the only person you can obtain a Mew from. The first trainer (male swimmer) in Misty's Gym will also give you a Mew. Oh, and one of the trainer's (I think it was one of the old Men or Gentlemen on the ship that has a Growlithe) gives you MissingNo. Which if caught, is a LV2 Rhydon with the attacks Water Gun, Water Gun, Sky Attack and requires a few hundred thousand exp to go to LV3.

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Wed Oct 27, 2010 6:44 pm
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In reply to a previous thread concerning the trainers and what you get for them, i've done a couple and here are my results so far on Yellow:

Tentacool 18 24 Pokemaniac north of tower in lavender town, trainer out of town
Gastly 19 25 Hiker northwest of lavender town, south of jump-able ledge
Pinsir 1D 29 Jr. Trainer F left of lavender town exit to rock tunnel
Arcanine 14 20 Lvl 15 Zubat (this was accidental! I went into rock tunnel after battling Jr. Trainer above on a second attempt and the zubat attacked)

hope this helps, and as i progress with it I'll pop my findings up on here :)


Sun Jan 16, 2011 8:18 pm
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That is something which you don't usually read . Fun with the Glitch is like my dream but I forgot that he is out my league . I will not give up .


Tue Feb 01, 2011 5:21 am
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found some more :D

Pidgey 24 36 Swimmer south of Fushcia, "I need to warm up before my swim". This is a strange one as instead of the start menu, you get "I'm better at school than I am at this!"
Arbok 2D 45 Bird Keeper facing south between lavender/fushcia, "tms are on sale in celadon but onle a few people have hms"
Nidoran(F) 0F 15 Youngster in ledge/boulder box on way from pewter to mt moon
Nidoqueen 10 16 Northwest Hiker in Cerulean Cape
Venonat 41 65 Juggler on East side of Fushcia Gym, facing East
Diglett 3B 59 South channeler on fourth floor of pokemon tower
Psyduck 2F 47 First Blackbelt in fighting dojo. This Psyduck is also lvl 8, which is odd since everything else seems to be lvl 7!
Mankey 39 57 Biker facing north on cycle track, by water, "you heading to Fucsia?"
Growlithe 21 33 Gambler in south west corner of grassland, east of Vermillion City
Arcanine 14 20 Hiker East of Lavender town exit to Rock Tunnel
Kadabra 26 38 Cue Ball facing west by the patch of grass at the top end of the cycle path, has machop and machoke. This one is odd as it doesnt bring up the start menu, instead it says "Why? Why?... "
Machoke 29 41 Biker on right fork of cycle path, "let voltorb electrify you!"
Tentacool 18 24 Pokemaniac north of tower in Lavender town, first trainer out of town
Slowpoke 25 37 Rocket in silph co "quit messing with us kid"
Magneton 36 54 second floor of pokemon tower, north channeler
Grimer 0D 13 Bug Catcher west of path in grass north of Vermillion City
Shellder 17 23 Rocket 3 floors down into the basement of the game corner, facing north, 2 Machops, "we had word from upstairs that you were coming"
Gastly 19 25 Hiker northwest of lavender town, south of jump ledge/first Youngster west of Vermillion City
Gengar 0E 14 North Lass facing west on route between pewter city & mt moon
Drowzee 30 48 West facing bird keeper, between Fushcia & Lavender, "have you heard of the legendary pokemon?". This Drowzee is lvl 9!
Exeggcute 0C 12 First Lass east of Pewter City
Hitmonlee 2B 43 Cue ball on right fork of cycle path, "my pokemon won't evolve. Why?" (he has a machoke, and no friends :P)
Hitmonchan 2C 44 Rocket 3 floors down into the basement of the game corner, facing east, "stop meddling in team rocket's affairs"
Chansey 28 40 Bug Catcher east of path in grass north of Vermillion City
Tangela 1E 30 most Northen Fisherman on Route 12
Horsea 5C 92 Juggler in bottom left corner of Fushcia Gym
Staryu 1B 27 Cue ball on cycle path "I need some exercise", you cant use him to get the start button back so battle the biker underneath him, who gives you a Psyduck if you prefer.
Mr. Mime 2A 42 Second Blackbelt in Fighting Gym
Electabuzz 35 53 Biker by the top of the water on cycle path "we're bikers! we're highway stars!"
Magmar 33 51 Bird trainer west of Fushcia, "i always check grassy areas for new pokemon"
Pinsir 1D 29 Jr. Trainer F left of lavender town exit to rock tunnel
Gyarados 16 22 Right Beauty on route 13 "Sure, I'll play with you"
Ditto 4C 76 Scientist on 2nd floor of silph co
Flareon 67 103 Koga :D
Omanyte 62 98 Juggler bottom right of Fushcia Gym
Moltres 49 73 one of the four rocket brothers in silph co, facing north on floor 9
Dratini 58 88 Juggler on west side of Fushcia Gym, "Koga descended from..."
Dragonite 42 66 Biker at the top of cycle path, facing west "hey you bumped me"


Missingnos:
Rocket 2 floors down in game corner, facing south by the big tables. This makes people appear in silly places in Lavender town and for you to appear on the far left of the screen, but still control the middle square. Its hillarious!
Middle and south channelers on second floor, west and south on the third, of Pokemon tower, both crash the game.

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Mon Feb 07, 2011 7:42 am
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HI,
so I recently found this website containing a full list of all the glitch pokemon that the mew glitch is able to produce.
http://www.gamefaqs.com/gameboy/367023- ... faqs/59445
you need a pokemon on your team with a certain special stat number to determine which of these glitch pokemon will appear.

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Tue May 03, 2011 11:50 pm
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wow that guide is just an exact -copy and paste- from http://www.ocf.berkeley.edu/~jdonald/pokemon/mewglitch.html#catchmew2

You must be really smart who figures it out just the way they did on that site. :O


... Have you found out which trainer to battle for Kabuto when doing that glitch?

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Sun May 22, 2011 7:18 am
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Comment 1 wrote:
wow that guide is just an exact -copy and paste- from http://www.ocf.berkeley.edu/~jdonald/pokemon/mewglitch.html#catchmew2

Comment 2 wrote:
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This would have been so amazing for me if I knew this when my darn Red battery still worked, I would replace it but... I am leh tired.


Tue May 24, 2011 6:29 pm
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I found who to battle for MISSINGNO.
The first trainer you encounter while heading right from fuschia city.

But i need help, to catch it. My ultraballs are missing on it. Do i have to make it sleep or something likethat?

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Fri Jun 10, 2011 8:06 am
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Darn, was hoping a Meowth had been found. Though mad props on the work already posted.

got a thing for Meowth but unfortunately can't catch him in yellow and it's a bit hard to find people to trade with right now.

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Fri Feb 01, 2013 6:03 pm
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I watched a YouTube series called "Let's Glitch Pokémon Yellow" and he got lots of different glitch pokémon from it that way.

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Sun Feb 03, 2013 9:56 am
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I am literaly googling all the mumbo gumbo you said, bro I got zero of it. :frustrated:

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Sun Jun 16, 2013 5:20 am
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Wow, folks I highly recommend watching MissingnoXpert on youtube for a demonstration of all glitches known to RBY. I've been watching his 'Lets Glitch Pokemon Yellow' series all freaking day, at least half of which is his experimenting with the many possibilities of the mew glitch and he is very entertaining. He also has Red and Blue series which I have not gotten to yet.

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Thu Jan 30, 2014 1:02 am
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KingErick wrote:
incredably well done.

you deserve a ribbon and a b$@wj@B or a really hot chick for your troubles xD


Myself, 4 years ago.

My, how mature I was.

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Sat Feb 01, 2014 11:58 pm
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