Gholdengo is a bipedal humanoid Pokémon whose body is composed of 1,000 Gimmighoul Coins stacked together, giving it a golden, cylindrical appearance. Its face has oval eyes and a mouth displaying a crooked smile. Its body has skinny arms with large hands, and short, stumpy legs with no toes. It has three fingers on each hand and four tufts of dreadlock-like "hair", all made out of coins. It wears the strap from a Gimmighoul's chest as a belt, using it to fasten the chest to its side. The belt buckle has a stylized number 1,000 on it. Gholdengo is capable of creating a golden surfboard out of coins as a means of movement.
Gholdengo is a sociable Pokémon, able to quickly befriend anybody. It overwhelms opponents by firing coins at them in quick succession. The coins that form its body are tightly packed, making it able to withstand damage. When attacked by enemies, it can let loose some of the coins on the areas of its body that are hit, in order to absorb the impact.
Gholdengo is the only known Pokémon capable of learning the move Make It Rain. It is also the only known Pokémon that can have Good as Gold as an Ability.
- Despite its Japanese name, Pokédex image, and its ability to create a surfboard while traversing water, Gholdengo is incapable of learning the move Surf.
- Gholdengo is heavily associated with the number 1,000.
- Its National Pokédex number is #1000.
- A video titled “One Thousand Pokémon!” was made to commemorate the number of Pokémon surpassing 1,000. The video features a counter that increases as Pokémon appear, eventually turning gold when it reaches 1,000 with Gholdengo.
- Its belt buckle has a stylized depiction of the number 1,000 on it. As Gholdengo's belt is fashioned from Chest Form Gimmighoul's chest, this symbol is also present in Chest Form Gimmighoul, albeit oriented sideways.
- Its body is made of 1,000 Gimmighoul Coins.
Gholdengo's golden humanoid appearance, together with its position as the 1,000th Pokémon in the National Pokédex, may be inspired by award statuettes, which are often made with gold and given to honor achievements or milestones. Gholdengo may also be based on El Dorado, a mythical king who covered his entire body with gold.
The association of a ghost with coins may draw inspiration from Charon's obol, where the deceased are buried with coins as a preparation for the afterlife. The coins were frequently placed in the mouth or on the eyes.
Gholdengo also seems to take inspiration from surfers, given the golden surfboard it rides on as well as its dreadlock-like appendages and friendly nature, befitting of the archetypal "surfer dude." It also bears some physical resemblance to a tube man. The cylindrical shape of its body is similar to a coin wrapper.
Gholdengo may be a combination of ghoul or ghost, golden, and possibly go (as in Pokémon GO, the game its pre-evolution Gimmighoul debuted in). It may also come from tengo, the Spanish word for "I have", or from denga, an old Russian coin worth one two-hundredth of a ruble, the plural form of which became the usual Russian word for money.
Surfugo may be a combination of surf, 富豪 fugō (wealthy person), gold, and possibly go.