p T is a dual-type Normal/GroundGlitch Pokémon found in Pokémon Red and Blue. It can be obtained by performing the Mew glitch with a Special stat of 199. When captured, it is likely that the game will freeze. p T occupies hexadecimal slot C7 and will become a u if traded to Pokémon Yellow Version. p T's sprite is not constant, and may be different each time it is seen due to its sprite data being called from RAM.
This glitch Pokémon article is part of Project GlitchDex, a Bulbapedia project that aims to write comprehensive articles on glitches in the Pokémon games.