Spice Girl is a Stand. A Stand is a physical manifestation of a person's "life energy". It is a power unique to the JoJo's Bizarre Adventure series. A Stand is an entity psychically generated by its owner, referred to as a Stand user.

Spice Girl is able to soften any material it strikes. When Spice Girl hits something with its fists, it can soften said object into a rubber-like consistency. Any material, even metal or rock, will be softened into the same state.