Pokemaniac Donald is a resident of Goldenrod City, living in the underground passage.
Pokémaniac Donald became infamous for being one of the possible suspects of the Bet-boy assassination attempt. After Baba battled him, a known glitch activated, crashing the game and erasing a lot of progress. This was seen as the Bet-boy assassin shooting Baba over gambling issues, sending her either into a coma or back in time.
Artwork of him usually depicts a Generation 2 Pokémaniac wielding a gun.