ACT4 is of humanoid shape and broad or square build; of articulated legs, arms, hands, and fingers. Its head is mounted in the front of its chest, and from the bottom of its chest hangs to its ankles a vestment comprising strings of vertical ellipses. Like Johnny, it wears a horseshoe on its forehead. The inside of its curtain-like body is hollow similar to death thirteen, and its face can move around like the Zaku's mono-eye. Tusk ACT4 is primarily pink in all media featuring it. Ability: The principle behind Tusk ACT4 derives from the use of the Golden Spin, which requires Johnny to make his horse run in its "natural state". By doing so, the horse produces rotational energy in the form of the Golden Rectangle and by combining it with Tusk, Johnny is able to release infinite rotational energy. He can, however, shortcut the process as a last-ditch effort, using a Steel Ball to temporarily galvanize his horse's movement. Tusk ACT4 is thus one of the most powerful Stands in the series due to the infinite energy behind it but is incredibly difficult to deploy as a trade-off. Otherwise, Tusk ACT4 displays the physical abilities of a close-range Stand and is able to pummel Dirty Deeds Done Dirt Cheap. Infinite Rotation Tusk ACT4 embodies the infinite energy and rotation of the Golden Spin and is able to deploy it in various ways. Following the principle of the Golden Spin, the energy wielded and embodied by Tusk ACT4 is infinite, allowing a wide array of otherwise impossible feats. One of the first abilities displayed by Tusk ACT4 is to be able to break through the dimensional barrier of Love Train and enter the space in which Valentine hides. Moreover, Tusk ACT4 defies the laws of gravity and therefore can move slightly and probably still influence Diego during the stopped time. The damage caused by the rotation is stated to be probably infinite as well. Like with ACT2 and ACT3, the energy of the Spin can persist inside objects even if Johnny misses a nail shot, and can be redirected toward a target. If ACT4 touches someone, it imbues the target with an infinite spinning motion. Not only does part of the body separate to spin, everything down to individual cells spin on themselves, greatly distorting the shape of the victim. Eventually, the targets are disintegrated by the rotation and according to Diego, sent to another dimension. According to Johnny, not even a soul will be left behind. The Spin goes on forever and never leaves the person or their Stand, forcing them to return to the place where they were hit or its equivalent in each parallel dimension, thus Funny Valentine was not able to escape it despite switching dimensions and/or bodies, always returning to the underground location in which he was hit. If someone uses a tool, like a carriage, to get away from the location, the Spin will imbue itself into the tool and destroy it, forcing the target back into their location. The rotation won't end unless Johnny shoots the target with a similar rotation that is spinning in the opposite direction, resulting in the two of them canceling each other out.