Quicksilver

"This Stand appears as a cannon on the user’s arm. It can convert minerals into Stand power and blast it at its foes, like a battery that uses metal as fuel. It can be detached if necessary. As far as Stands go, its pure destructive capability is top of the line." (In-Game Description)

"You are lively and flexible, but passionate about your likes and dislikes, and strongly opinionated. Sometimes your temper gets the best of you, and you'll lose your head over the tiniest slight. However, you're empathetic and always an open book when it comes to feelings, so people find you easy to talk to. You trust your heart rather than your head, often letting your emotions carry you away." (Personality Evaluation)

Base Stats
In addition to these base stats, the Stand itself gives a bonus of Power/Durability/Spirit/Speed +1. Quicksilver is a "glass cannon" with high power output but low defense and hit rate and high SP consumption. The risk is high, but so is the reward. Its array of strong attacks that hit all enemies, as well as its range, make it ideal for early- and late-game grinding. In addition, it can consume the Scrap Metal you can buy in Calcutta and Edfu for SP recovery.

Moveset
Quicksilver's normal attack is a physical, non-ranged attack with a basic hit rate of 90% that hits one enemy. 1Focus Beam can be learned randomly by staying in the hotel with Joseph after learning all of the Ripple techniques from the Secret Books, not including +/- Ripple and Ripple Gale.

Overworld Interactions
Calcutta Karachi Saudi Arabia Fertile Crescent Kom Ombo
 * Adds extra dialogue during the stand off with Hol Horse.
 * Cannot join the fight against Lovers.
 * Can help Kakyoin fight The Sun.
 * Adds extra dialogue when Jotaro and Iggy are escaping from Geb, but only if the Wave Motion Gun skill is learned.
 * Adds extra dialogue after the second fight with Khan.

Author's Notes
''In short, "someone who rushes headlong". Because of the user's hard yet soft nature, their image can be compared to minerals like stone or dirt. From the fact that that the stand releases minerals in various forms, it was decided that the stand converts them to energy. And because it shoots them in a straight line, the stand was turned into a laser cannon.''

Trivia

 * The default name of this Stand's user, Yamato, is a reference to Space Battleship Yamato, where the Wave Motion Gun originates.
 * This Stand is usually referred to as "Quiksilver" in the Japanese version of the game.
 * According to Clayman, Quicksilver represents the Enneagram type 1w2.