Immortal Beings
An immortal being is someone who is either born into, cursed, or transcended themselves above the concept of mortal aging and sometimes death. Most of the time they are recognized as someone who is or is related to an official mandate in the Heavenly Court. However, it has been proven that lesser beings can achieve immortality through dark means, enlightenment, or by pure accident.
Crafted heads of the two god brothers, Mazoku and Rugong.
Taramamu; one of the oldest immortal walking among Kudao's soil.
Celestials
Celestials are at the top of the immortal hierarchy, where all of life derives from. Born not of the three realms but from the cosmos, for they are the ones who formed them. They govern all that does and does not exist and their true form can be interpreted but not comprehended. The currently known celestials are the cosmic travelers Gudu and Jianyu, Clay dolls Otamu and Umato, Jade Emperor Shenhai, and the four guardians of the cardinal directions.
Gods
While regarded as the most worshiped, Gods are seconded in the pantheon tier. Born not from space but from those who are. They aren't as involved with mortal matters but more so than the Celestials, as some control earthy aspects such as weather, agriculture, greed, healing, war, and sometimes luck. Most gods such as Rugong, Xing Tong and the Bronze Lion General reside and serve in the Heavenly Court.
Demigods
Demigods are either half-gods or former deities who renounced their godhood to tread among humanity, such as the 12 Zodiacs of Shilon. Their purpose is at the center of the Divine Pillar and no higher. Demigods can breed with regular humans however the offspring's power is halved between the parents and diminishes upon each generation.
Transcended and Tarnished
Transcended and Tarnished are formal mortals that have either discovered the means of immortality through enlightenment and willing to let go of mortal desire or have been punished or cursed with an endless life that knows no rest. Immortality can go either way depending on your intentions and purpose for it. Examples of Transcended and Tarnished are ascended monks, Taramamu, and Hiro.
Yokai and Yaoguài
Yokai and Yaoguai are similar to Demigods where they are essentially half-gods except they all spawn from Mazoku, the god of terror. Not all demons live forever as a matter of some live for only several seconds depending on the type of Yokai/Yaoguai. But their origins in the land of the dead are both what connects and separates them from most divine beings.