Appearance
Small blue-gray metallic biped with gold eyes, black stripes, and thin antennae and a tail tipped with gold circles. One form hides in a red chest; the other carries an old coin on its back.

#999
Coin Chest Pokémon
Gimmighoul is a Ghost-type Pokémon, No. 999 in the National Pokédex, introduced in Generation 9 (Paldea region).
« It lives inside an old treasure chest. Sometimes it gets left in shop corners since no one realizes it’s actually a Pokémon. »
Small blue-gray metallic biped with gold eyes, black stripes, and thin antennae and a tail tipped with gold circles. One form hides in a red chest; the other carries an old coin on its back.
The chest form forces others, with ghost energy, to gather coins and hops slowly under its weight. The roaming form flees, turns invisible, and seeks its lost chest, then both become Gholdengo with 999 coins.
It controlled Roy, then Dot and Ult, to fill its chest with coins. It hid aboard the Brave Olivine, Dot caught it, and it evolved into Gholdengo.
Gimmighoul may come from "gimme" (give me) and "ghoul"; it also sounds like "gimme gold."