ゥL ゥM 4
LM4 (whose actual name is literally "ゥL ||ゥM 4") is a glitch found the Pokémon Red and Blue versions by doing method #3 of the Mew glitch using a Pokémon with a special stat of 198.
If an LM4 is raised to level 18, it will evolve into Clefairy, and then after that evolution ends, one second later it will evolve from Clefairy into a Nidoking. If the B button is pressed many time in a row during its evolution into Clefairy, it will stay as LM4; if the B button is pressed during its evolution into Nidoking, it will stay as a Clefairy. If it evolves into either of these two Pokémon, the newly evolved Pokémon will have the same moves that LM4 had. In the Red and Blue versions, LM4 (when looked at in stats) has the cry of a slowed-down version of one of the songs played in routes. In the Red and Blue versions, LM4's number will be #062. The Yellow version's equivalent of LM4 is the "7g" glitch, which has the cry of of a slowed-down version of the song when Pokémon enter the Hall of Fame after beating the Elite Four. It is also the types Water and Psychic, and is #79. 7g cannot evolve into Clefairy and Nidoking the way LM4 can.
Unlike Glitch Pokemon such as Small u, .4 and h POKé, LM4 is not known to freeze people's games or corrupt saved data. (See [1], [2])
LM4 can learn the following TMs and HMs: HM03, HM04, TM01, TM27, TM09, TM10, TM14, TM17, TM05, TM06, TM13, TM26, TM18, TM32, TM50
Evolution
See also: Glitch Pokemon
