Glitch City Laboratories Archives

Glitch City Laboratories closed on 1 September 2020 (announcement). This is an archived copy of an article from Glitch City Laboratories wiki.

A live version of this article is available at the Glitch City Wiki here.

You can join Glitch City Research Institute to ask questions or discuss current developments.

You may also download the archive of the wiki in .tar.gz or .xml.gz formats.


(↑ Back to the TMHMDex index)

Template:ItemInfoGenII TMHM

TM21 is a wrong pocket TM in Pokémon Gold and Silver. Its description is "An attack based on lack of loyalty.".


TM21 causes arbitrary code execution at FA6A in Echo RAM (a copy of DA6A), which is in the middle of Pokémon 2's data.

This makes it an ideal arbitrary code execution glitch item.