Refers to the "Stand" powers in JoJo no Kimyou na Bouken, which typically are portrayed as ghost-like projections of a person's psyche or fighting spirit. The special powers vary widely, such as the ability to control sand or summon a sword-wielding warrior. They first appear in Part 3 of the manga, with the powers becoming increasingly more complex and abstract as the series goes on.
In Part 3 the first group of Stands are named after the Major Arcana of Tarot cards (such as Star Platinum and Hierophant Green). As the story continues the new enemy Stands are named after Egyptian gods (such as Anubis and Horus). Near the end some Stands are named after western music groups (such as Cream).
From Part 4 onwards, the vast majority of the Stands' names are named after various western music groups, albums, and songs (such as Killer Queen, Aerosmith, Foo Fighters, and 20th Century Boy).
Although usually featured with their "Stand User", it is not uncommon for Stands to be featured by themselves or with other people in fanart. An increasingly common example is Dio Brando's Stand The World, which is often featured with Touhou's Izayoi Sakuya.