Tusk is the Stand of Johnny Joestar. Tusk is unique in that it works in tandem with the power of Spin, letting Johnny shoot nail bullets from his fingertips to deal maximum damage. Through several points in the story, Tusk evolves into three other forms known as "ACTs," Paraplegic competition on horse race steel ball run. Johnny Joestar is introduced as a distant, depressive paraplegic man whose career as a horse jockey was ruined when he was shot in the spine after conceitedly antagonizing fun