'M (00)

'M (00) is a Generation 1 glitch Pokemon that can only be found in Red and Blue. If traded to Yellow this Pokemon with turn into a 3TrainerPoké$. 'M (00) is often called the "sister" glitch counterpart to MissingNo due to the two sharing a Sprite.

Similarities and Differences to MissingNo
'M (00) is, at first glance, just a MissingNo with a different name but they are completely separate Glitch Pokemon. They have different Index Numbers, which is why 'M (00) can evolve into Kangaskhan but MissingNo cannot.

Obtaining
'M (00) can only be obtained by using the Old Man Glitch while you do not have a default name like RED.

Glitches Caused
The encounter flag for MissingNo. and 'M (00) is the highest bit of the 6th item quantity. Meaning that encountering MissingNo. or 'M (00) makes the player to get 128 of the 6th item of their Bag if they have less than 128 of that item. Also, if the player has Hall of Fame data, encountering 'M (00) corrupts it.

Evolution
'M (00) evolves into Kangaskhan at level 0 or Clefairy at level 128