Glitch contact

A glitch caller is a phone number in the Pokégear on Gneration II of Pokémon games that is not a coded person but rather a glitch accessed by a code from a game-altering device. Most glitch callers get their name from name banks in the ROM, while others have glitch text as their name. A full comprehensive list will be given in the PhoneDex once it is completed.

Most crash the game or give a Glitch Dimension while some don't do anything at all. Others give some interesting effects like D8 for example. It allows you to walk through walls when it calls you and access a Glitch City. Some will play the credits but one of these actually lets you save and beat the game. One gives the player a Master Ball when called but crashes the game soon after.