|Original Region||Johto (scrapped)|
|First Appearance||Pokémon Gold and Silver (scrapped)|
This Pokémon existed in the 1997 Space World demo of Pokémon Gold and Silver, but was removed before its final release. It has never been officially confirmed, although data from the leaked demo reveals some info.
Mewosy's Japanese name roughly translates to ko (子) for child/baby, nya (にゃ) for meow, and possibly coin (コイン). This ties in with how Meowsy is a child cat, seemingly containing a 5 yen coin on its forehead, connecting it with Meowth's Amulet Coin and signature move Payday.
The English name is a transliteration made by the team behind the Pokémon Gold and Silver demo leak, and is purely conjectural.