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MissingNo.
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Encountering a variant of 'Red/Blue regular MissingNo.' through the old man trick

MissingNo. (Japanese: けつばん, Ketsuban), or Missingno., referred to as MissingNO on Nintendo's GameBoy - Specific Game Pak Troubleshooting page refers to the names of 39 glitch Pokémon with index numbers in between existing, valid (non-glitch) Pokémon and the glitch Pokémon within those index numbers (full list of index numbers). Its Pokédex category is the "???" Pokémon.

MissingNo. and 'M (00) are the most well known Pokémon glitches in the English Pokémon glitch community, likely because they can easily be found with the Old Man Trick; and they will increase the quantity of the player's sixth item by 128 when encountered on the opponent's side, unless there are already have 128 there, due to its invalid family 000 (see glitch Pokédex flags).

The Old Man Trick is sometimes referred to as the "MissingNo. glitch", but this is misleading because MissingNo. is not the only Pokémon or glitch Pokémon that can be found with the glitch.

The Old Man Trick is not present in Yellow or certain foreign language versions such as Pokémon Red/Green, so MissingNo. cannot be obtained that way in those versions.

Upon catching MissingNo., its Pokédex entry will be shown if the player has seen Cubone, and this will activate the Rhydon trap, otherwise the Pokédex entry will not be shown and the MissingNo. will not be turned into a Rhydon.

English MissingNo. have invalid mini-sprites that vary based on location.

MissingNo. unlike 'M (00) and other 000 family glitch Pokémon cannot learn any level up moves.

Obtaining MissingNo.

Below are methods of obtaining MissingNo. in different versions.

Note that additionally, MissingNo. can be seen and can duplicate items using the Cable Club escape glitch in all versions.

Pokémon Red/Blue (English)

  • Old man glitch:- if the character in the third, fifth, or seventh slot of the player's name is : the end-name marker, G, H, J, M, S, T, :, ], a, b, c, m, o, p, or v.

In the Spanish versions, it is required to walk on the shore tiles with walk through walls instead of surfing on it. While the old man glitch is possible the same way in the Italian versions, MissingNo. and hex:00 may freeze the game.

The glitch can be pulled off by surfing in the French versions, MissingNo and hex:00 also freeze the game at either a black or white screen.

  • Ditto trick/Trainer-Fly variation:- with one of the following Special stats (if the value is greater than 255, take a modulo 256): 31, 32, 50, 52, 56, 61, 62, 63, 67, 68, 69, 79, 80, 81, 86, 87, 94, 95, 115, 121, 122, 127, 134, 135, 137, 140, 146, 156, 159, 160, 161, 162, 172, 174, 175 or 181.
  • Remaining HP glitch:- with one of the following remaining HP values (if the value is greater than 255, take a modulo 256): 31, 32, 50, 52, 56, 61, 62, 63, 67, 68, 69, 79, 80, 81, 86, 87, 94, 95, 115, 121, 122, 127, 134, 135, 137, 140, 146, 156, 159, 160, 161, 162, 172, 174, 175 or 181.
  • Time Capsule exploit:- with Scizor, Shuckle, Heracross, Sneasel, Teddiursa, Ursaring, Slugma, Magcargo, Swinub, Piloswine, Corsola, Remoraid, Octillery, Delibird, Mantine, Skarmory, Houndour, Houndoom, Kingdra, Phanpy, Donphan, Porygon2, Stantler, Smeargle, Tyrogue, Hitmontop, Smoochum, Elekid, Magby, Miltank, Blissey, Raikou, Entei, Suicune, Larvitar, or Ho-Oh.
  • Arbitrary code execution with 8F.
  • TMTRAINER effect via '-' (when sprites are not flipped).
  • Evolve .PkMn [0xDF] into Ghost MissingNo. at Level 224.
  • Evolve ゥ₽ [0xF4] into MissingNo. 0xB5 at Level 195.

Pokémon Yellow (English)

  • Ditto trick/Trainer-Fly variation (fossil/ghost MissingNo. recommended to avoid a freeze)
  • Remaining HP glitch:- with one of the following remaining HP values (if the value is greater than 255, take a modulo 256): 31, 32, 50, 52, 56, 61, 62, 63, 67, 68, 69, 79, 80, 81, 86, 87, 94, 95, 115, 121, 122, 127, 134, 135, 137, 140, 146, 156, 159, 160, 161, 162, 172, 174, 175 or 181.
  • Time Capsule exploit:- with Scizor, Shuckle, Heracross, Sneasel, Teddiursa, Ursaring, Slugma, Magcargo, Swinub, Piloswine, Corsola, Remoraid, Octillery, Delibird, Mantine, Skarmory, Houndour, Houndoom, Kingdra, Phanpy, Donphan, Porygon2, Stantler, Smeargle, Tyrogue, Hitmontop, Smoochum, Elekid, Magby, Miltank, Blissey, Raikou, Entei, Suicune, Larvitar, or Ho-Oh.
  • Arbitrary code execution with ws m.
  • TMTRAINER effect via '-' (when sprites are not flipped).

Pokémon Red, Green, Blue (Japanese)

  • Ditto trick/Trainer-Fly variation (with the aforementioned Special stats. Regular MissingNo. may freeze the game in Red/Green)
  • Fossil conversion glitch (with a current experience modulo 256 of 31, 32, 50, 52, 56, 61, 62, 63, 67, 68, 69, 79, 80, 81, 86, 87, 94, 95, 115, 121, 122, 127, 134, 135, 137, 140, 146, 156, 159, 160, 161, 162, 172, 174, 175 or 181.
  • Arbitrary code execution with てヘ (tehe).

Data

All MissingNo. are Pokédex number 000. and cannot learn any level up moves, unlike 'M (00) which evolves into Kangaskhan at level 0 or Clefairy at level 128, and learns Pound at level 136. MissingNo. typically have 'blank' cries; i.e. a Nidoran♂ (base 00)'s cry with a pitch of 0 and no echo, but nine MissingNo. have unique cries that were actually programmed into the game (see this section).

There are five 'forms' of MissingNo. in the English games. The first form is the 'regular' form, which there are 36 of. The second form is Pokémon Yellow's equivalent of the Red/Blue regular form.

All 36 'regular' and 'regular Yellow' MissingNo. use an invalid sprite. The other three forms are MissingNo.'s 'special' forms, which use the Kabutops fossil sprite from Pewter Museum (hex: B6 form), the Aerodactyl fossil sprite from Pewter Museum (hex:B7 form), and the Ghost MissingNo. sprite from ghosts in the Pokémon Tower (hex:B8 form), respectively.

In English Red/Blue, all 'regular' MissingNo. share the same sprite.

MissingNo. occupies the following index numbers.

Hexadecimal ID Decimal ID
1F 31
20 32
32 50
34 52
38 56
3D 61
3E 62
3F 63
43 67
44 68
45 69
4F 79
50 80
51 81
56 86
57 87
5E 94
5F 95
73 115
79 121
7A 122
7F 127
86 134
87 135
89 137
8C 140
92 146
9C 156
9F 159
A0 160
A1 161
A2 162
AC 172
AE 174
AF 175
B5 181
B6 182
B7 183
B8 184

'Regular' Red/Blue MissingNo. data

All 36 regular Red/Blue MissingNo. are dual typed Bird/Normal Pokémon.

Their data is derived from Biker rosters; because the game uses extrapolation to work out the 'base' data for Pokédex number 000. For this reason, a lot of 'M (00)'s data is the same, because it shares the same Pokédex number (or 'family').

See this page for more information.

Starting moves

All 36 regular Red/Blue MissingNo. have the following starting moves:

Water Gun, Water Gun and Sky Attack.

Learnset

All MissingNo. can learn no moves other than its starting moves, moves through TM/HM or through the Johto guard glitch.

Base stats

All have the following base stats:

  • Base HP of 33.
  • Base Attack of 136.
  • Base Defense of 0.
  • Base Speed of 29.
  • Base Special of 6.

TM/HM learnpool

  • TM01 - Mega Punch
  • TM02 - Razor Wind
  • TM03 - Swords Dance
  • TM05 - Mega Kick
  • TM06 - Toxic
  • TM09 - Take Down
  • TM10 - Double-Edge
  • TM11 - Bubblebeam
  • TM13 - Ice Beam
  • TM14 - Blizzard
  • TM17 - Submission
  • TM19 - Seismic Toss
  • TM20 - Rage
  • TM25 - Thunder
  • TM26 - Earthquake
  • TM27 - Fissure
  • TM29 - Psychic
  • TM30 - Teleport
  • TM43 - Sky Attack
  • TM44 - Rest
  • TM45 - Thunder Wave
  • TM49 - Tri Attack
  • TM50 - Substitute
  • HM01 - Cut
  • HM02 - Fly

Miscellaneous data

Red/Blue regular MissingNo. has a catch rate constant of 29, and Yellow regular MissingNo. has a catch rate constant of 0.

Red/Blue regular MissingNo.'s experience group is hex:1A. For this group, MissingNo. has a total experience of 345420 at level 100. In Yellow it is the hex:06 group instead, where MissingNo. will usually stay at Level 1 and has less experience at Level 255 than at Level 100.

Encountering this MissingNo. on the opponent's side or sending it out in battle will corrupt the Hall of Fame.

Due to an invalid Pokédex flag (#000, but essentially #256), MissingNo. (and 'M (00)) will increase the player's sixth item quantity by 128 if they do not have at least 128 items in that position.


Pokédex data:

RB Dex 1F.png

'Regular' Yellow MissingNo. data

'Regular' Yellow MissingNo.'s random front sprite commonly freezes the game, but when it doesn't, it may cause a multiple walking characters effect after exiting battle. Regular Yellow MissingNo. is a dual-typed Normal/randomly named glitch type (which commonly has 9s in it).

Starting moves

  • Pay Day.
  • Bind.
  • Water Gun.


Pokédex data:

Y Dex 1F.png

Miscellaneous data

Yellow MissingNo.'s catch rate is 0, but this does not mean it is impossible to catch it. Yellow MissingNo. needs an extremely large amount of experience to reach level 100 (16,136,684) but needs less to reach level 255 (13,582,671). It is part of experience group 0x06.

'Special' MissingNo. data

'Special' MissingNo. take the appearance of either a Kabutops Fossil (hex:B6), an Aerodactyl Fossil (hex:B7) or Pokémon Tower Ghost (hex: B8) on the opponent's side, but they have no valid back sprite.

The two-byte backsprite pointer is instead taken from another Pokémon that was in memory. In Red/Blue the pointer if banked, is from bank 0x0B for MissingNo. 0xB6 (Kabutops Fossil) or bank 0x0D for MissingNo. 0xB7 (Aerodactyl Fossil, Pokémon Tower Ghost).

The starting moves, TM/HM learnpool, base stats and experience needed to level up for these Pokémon is based on the last Pokémon in the party except for another MissingNo. of the same kind. For a Trainer with an opposing special MissingNo., this data is taken from the last Pokémon they sent out.

A special MissingNo. will only corrupt the Hall of Fame if the player sends it out in battle.

Japanese MissingNo. data

The Japanese Pokémon games have at least 6 forms of MissingNo.; which are the previously mentioned 'special' (Kabutops Fossil, Aerodactyl Fossil, Ghost) MissingNo. as well as Red/Green MissingNo., Japanese Blue MissingNo. and Japanese Yellow (Pocket Monsters Pikachu) MissingNo.

Red/Green MissingNo. and Japanese Yellow MissingNo. can freeze the game on the opponent's side, while Japanese Blue MissingNo. appears to be stable.

In Pocket Monsters Blue, MissingNo. was given the placeholder Pokédex entry "コメント さくせいちゅう" (meaning 'comment to be written') and became the ??? species. This was not translated, resulting in a glitched Pokédex entry in the localized Pokémon Red and Blue and the corruption of MissingNo.'s original height and weight (1.0 m (3.3 ft) and 10.0 kg (22.1 lb), respectively), showing instead a height of 10.0 ft (3.1 m) and a weight of 3507.2 lb (1590.8 kg).

Deleted Pokémon theory

It is a common misconception that MissingNo. is an error handler for invalid Pokémon in general; but this is not the case, all glitch Pokémon with index numbers past the last valid Pokémon Victreebel; hex: BE (counting 0 as 256) have invalid names.

The name "MissingNo." therefore, may be referring to a placeholder Pokémon name, in case Game Freak wanted to add more Pokémon into the game.

The list of Pokémon by index number is not in Pokédex order, and they arguably represent the order that they were programmed into the final game, because according to an interview (translation), Rhydon (index number 01), was one of the first Pokémon created.

In this case, the fact that MissingNo. is found between the index numbers of real Pokémon is significant because it shows that the MissingNo. may have been deleted entries. Furthermore, the number 151+39 comes to 190 which may be considered as a 'round' number, and according to a post from Zog on Smogon, Shigeki Morimoto confirmed that there were originally 190 Pokémon, and that the rest were saved for later.

There may have once been an extra MissingNo. occupying Mew's index number, hex:15; because according to Iwata Asks: HeartGold/SoulSilver, Mew was a last minute addition to the game once debugging features were removed.

Unused cries

Of the 39 MissingNo., nine of them have unique cries that may have originated from deleted or early versions of Pokémon.

Note that MissingNo. hex:45 has a cry identical to Zubat, and MissingNo. hex:89 has a cry identical to Dragonair.

The data is as follows (see here for recordings):

Index Number Hexadecimal Identifier Base Cry Cry Pitch Cry Length
67 0x43 0 128 16
69 0x45 29 224 128
79 0x4F 34 255 64
81 0x51 14 224 96
94 0x5E 15 64 192
95 0x5F 15 32 192
127 0x7F 17 32 16
137 0x89 15 64 128
181 0xB5 29 0 128


Menu sprites

Front sprites

Backsprites

Experience group

Red/Blue experience group 0x1A: Experience=RB 1A experience group.png

  • Experience at Level 100: 345,420
  • Experience at Level 255: 2,185,270

Yellow experience group 0x06: Experience=Y 06 experience group.png

  • Experience at Level 100: 16,136,684
  • Experience at Level 255: 13,582,671

Other uses of the term 'MissingNo.'

MissingNo. is sometimes used as a general term for every glitch Pokémon, but this is a misnomer, as not all glitch Pokémon are called MissingNo., and MissingNo. is a placeholder name rather than an error handler per se.

In Generation IV, there is a sprite that reads 'missing number' (けつばん) in kanji (欠番) but it is not related to the glitch Pokémon MissingNo. and the name MissingNo. from Generation I.[1]

Ketsubantile.png

See also

  1. Old man trick
  2. Placeholder
  3. Bird Type
  4. Glitch Pokémon

External Links

  1. Encountering MissingNo. via the Old Man Trick
  2. Encountering a level 7 MissingNo. via the Ditto Trick