According to Nooroo, Miraculouses, magic jewels bestowing amazing power, were created many centuries ago. Meant for good purposes, the Miraculouses have been used by heroes throughout history. However, in the wrong hands, Miraculouses may be used for evil.
A Miraculous, when worn and inhabited by a kwami, transforms the wearer into a costumed appearance based on its animal theme. It also grants the wearer enhanced abilities, a weapon, and a unique superpower. The transformation lasts until the superpower is used, leaving the wearer about five minutes until they revert back to normal.