Gimmighoul
From Fanonpedia
Gimmighoul is a peculiar Pokémon whose Roaming Form is a common sight throughout the Paldea region, though difficult to capture on account of its fast fleeing. The Chest Form, meanwhile, hangs around on watchtowers and such, waiting for an unsuspecting Trainer to siphon Gimmighoul Coins from. When Gimmighoul collects a total of 999 Gimmighoul Coins, it uses them all to evolve into Gholdengo.
