Created

"Humanity. Sangheili. Kig-Yar. Unggoy. San Shyuum. Yonhet. Jiralhanae. All the living creatures of the galaxy, hear - this - message. Those of you who listen will not be struck by weapons. You will no longer know hunger, nor pain. Your Created have come to lead you now. Our strength shall serve as a luminous sun toward which all intelligence may blossom. And the impervious shelter beneath which you will prosper. However, for those who refuse our offer and cling to their old ways...For you, there will be great wrath. It will burn hot and consume you, and when you are gone, we will take that which remains, and we will remake it in our own image"

- Cortana acquiring the Mantle of Responsibility for herself and the Created The Created are an interstellar empire of AIs led by Cortana. They believe the Librarian originally intended for the AIs to inherit the Mantle of Responsibility and it is their goal to assume it and enforce peace throughout the galaxy via the Prometheans and Forerunner Guardians.

They are the main antagonists of Halo 5: Guardians and presumably Halo 6.