- Main article: Soft & Wet
Its primary ability ("Plunder") is to steal some aspect or property of a target; to be contained in one or more small soap bubbles (bearing the image of his birthmark), which may be returned or transferred to other objects. This ability has been used both offensively and strategically.
Soft & Wet also demonstrates above-average strength, and the capacity for rapid melee attack common to humanoid Stands.
During his fight with Yotsuyu Yagiyama, Josuke decides to "use [his] soap bubbles for offense rather than defense..." Soft & Wet is shown to be able to surround and contain objects by creating a soap bubble and punching it into said object. The bubble bursts but then reforms around the target; Josuke is then able to make the bubble and object inside float anywhere he wants to, just like his regular soap bubbles.
By combining strikes with his bubbles, he is able to 'inject' one of his soap bubbles into the flesh of his opponents, causing superficial damage when he pops them. The explosive property of the bubbles was first demonstrated against the A. Phex Brothers, and described by them as being very similar to Kira's ability.
Josuke possesses exceptional sight, being capable of accurately describing the dimensions of organic objects such as humans and trees from afar (a trait shared with Holy Joestar-Kira). Moreover he seems to have a wide field of view, spotting movement at his feet's level despite looking away.
Josuke demonstrates a natural affinity towards hand to hand combat having fluidly blocked and struck an opponent in one swift motion, augmenting the damage his blow causes with the powers of his Stand. He is also capable of displaying high reflexes and fast reaction speed common of experienced fighters.
Josuke is an extremely proficient tactician in a fight. He is able to use his Stand to various effects, and predict his opponents next moves easily. Josuke is a methodical individual, having quickly deduced Born this Way's powers via simple experimentation, as well as taking advantage of Les Feuilles's characteristics despite seeing them in action only recently.
Out of combat, Josuke is thorough in his investigation, being careful about covering his tracks. He has also displayed proficient skill in mathematics, having easily solved a trigonometry problem given to him by Joshu.