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????? (00) ????? (FC) Generation II glitch Egg (Gold/Silver) (FD)

Please note that some of the data described here may not be fully reliable if it depends on the contents of writable memory, such as RAM; WRAM; SRAM.

G: S:
Bulbapedia link ????? (Gold/Silver FC)
Equivalent glitch Pokémon ????? (Crystal FC)
Equivalent Pokémon (Generation I) Wigglytuff
Index number (hex) FC
Index number (dec) 252
Pokédex number
Pokédex marker byte 0x1A
Breeding result (when glitch Pokémon is female or paired with Ditto) ????? (FC)
Type(s) Psychic (0x18)/Glitch (0x79)
Category (Many 9s)
Base happiness
Egg group Water 1/Group 0
Color Gold
Catch rate constant 0x19
Experience group 0xFF
Level 50: 258050
Level 100: 2016350
Experience yield 0x90
Height 5'77
Weight 486.3lb
Gender ratio 12.5%. Male if Attack DV>1 (14 males to 2 females).
Wild held item HP Up,
Gorgeous Box
Sprite dimensions 1x13

Tested mainly on Gold Version only.

(FC) (????? FC) is a dual-type Psychic (0x18)/Glitch (0x79) glitch Pokémon in Pokémon Gold and Silver, with an index number of hex:FC (dec:252).

It is part of an unnamed Egg group (0) not used by any valid Pokémon. It shares this trait with ????? (Gold/Silver 00).


By level up

  • Poison Sting (Level 1)
  • Meditate (Level 15)
  • Spore (Level 15)
  • Bubble (Level 80)
  • Sweet Kiss (Level 80)
  • Constrict (Level 80)
  • Barrier (Level 80)
  • DragonBreath (Level 80)


  • TM01 DynamicPunch
  • TM05 Roar
  • TM06 Toxic
  • TM07 Zap Cannon
  • TM10 Hidden Power
  • TM14 Blizzard
  • TM17 Protect
  • TM26 Earthquake
  • TM34 Swagger
  • TM41 ThunderPunch
  • TM42 Dream Eater
  • TM50 Nightmare

(Source: Yuzihax's G/S/C TM/HM list)

Base stats

Base stats Level 50 stat range Level 100 stat range
HP: 21 81-127 152-245
Attack: 51 56-102 107-200
Defense: 22 27-73 49-142
Speed: 75 80-126 155-248
Special Attack: 23 28-74 51-144
Special Defense: 98 103-149 201-294

Pokédex entry

Type effectiveness

(Data not available)


????? (FC)

Level 18 →

????? (00)

????? (FC)

Level 24 →


These glitch evolutions function differently to Pokémon Red, Blue, and Yellow, as originally in Generation I it would be possible for two evolutions to take place at once, with a new evolution starting immediately after the old one has finished.

????? (FC) must be between Level 18-23 for the evolution into ????? (00) to take place, and if ????? (FC) is raised to Level 24 or higher it appears only the evolution into Ivysaur will occur.

Methods to obtain

  1. Byte shifting via (00) or (FF) (available through stabilizing a bad clone or arbitrary code execution) (e.g. byte shift a total experience of 252 or 64512-64767; unconfirmed).
  2. Arbitrary code execution (e.g. through Coin Case arbitrary code execution, wrong pocket TMs, glitch Pokédex categories).


When the player goes to deposit this Pokémon into a storage box, it may erroneously appear at Level 255 holding an item. Backing out of the menu may cause the game to freeze. This trait is shared with ????? (Gold/Silver FE).

This behavior does not occur for ????? (Crystal FC) or ????? (Crystal FE).

Additional sprites

The front sprites of this glitch Pokémon may be affected based on the location it is encountered, whether an item was used, and the previous enemy battle sprite.