Ultra class is the term used which refers to the 7th and final stage of Digimon evolution.
Ultra class are those who have attained the final stage of evolution.
Never encountered in the digital world unless they want to be, these Digimon tend to be the most powerful.
This class are normally referred to as the ancients, gods, or creators of the digital world.
It is said that this class are immortal begins hidden with special object in the digital world.