The Seven Arcobaleno's

The Arcobaleno (lit. Rainbow) is a group made up of World's Strongest "I Prescelti Sette" of an era, which translates to the "Selective Seven", who each possess a pacifier that represent the different colors of the rainbow, with each color corresponding with their respective Dying Will Flames. Their Pacifiers will glow when a member is near another Arcobaleno. The Arcobaleno were transformed from adults into their infant and current forms in an event known as "The Fated Day" in a contracted job or aRepresentative Battle, for the purpose of harnessing the power of the Tri-ni-set, which supports all life on the planet Earth. Each of the current Arcobaleno has their own unique "curse" and specific abilities, as well as the ability to emit the Dying Will Flame throughout their entire body, as well as each having an Animal Partner, except Lal Mirch, Aria, and Yuni. They are mentioned to have taken on anArcobaleno curse themselves in order to protect the Tri-Ni-Set (7³), or "ultimate power." The Arcobaleno are also mentioned to be "walking out of time", meaning that they cannot age or die due to old age, although the Sky Arcobaleno's curse is a short lifespan rather than the infant body (except Luce, who had both), making the Sky Arcobaleno the only exception. Additionally, if one or more Arcobaleno dies, the Sky Arcobaleno, if still alive, can resurrect them by sacrificing his or her own life. However, eventually, the Arcobaleno weaken and thus Checker Face removes the Pacifier from the Arcobaleno, leaving a separate stone Pacifier to the former Arcobaleno, which causes the former Arcobaleno to die or become disabled. The few survivors become the Vindice, whose primary goal other than upholding the mafia law is to avenge themselves on Checker Face.