Sadana holds the power to slowly disintegrate any physical object that comes in contact with his right hand.
Over the span of 2000 years, Sadana has also naturally developed a passive ability to be able to see the flow of cosmic energy.
As the Lord of Decay in the Jespan High Party, Sadana was one of the deadliest Lords. When Ajespa was still intact, Sadana had 30 wives before he vowed to never marry again after accidentally killing everyone that he had loved.
His long life has been marked by profound tragedy, as it left him completely alone in the world. This isolation drove him to live as a homeless wanderer, actively seeking death as release from his eternal suffering.
When he encounters Star, he recognises a kindred spirit facing similar struggles with uncontrolled deadly powers, and despite his own desire for death, he chooses to become Star's mentor. His final act is one of ultimate sacrifice, using his decay powers in conjunction with Star's radiation to end his own life while teaching Star the crucial lesson about control and self-acceptance.
Sadana embodies the profound melancholy of immortal existence, shaped by isolation and the loss of everyone he has ever cared about. His overwhelming loneliness has left him genuinely seeking death, viewing it not as defeat but as blessed release from eternal suffering.
Despite his own pain, he reveals himself to be a wise and patient mentor, speaking in philosophical terms that sometimes seem cryptic but always carry deep meaning. What makes Sadana truly remarkable is his fundamental selflessness, even while desperately wanting his own suffering to end, he puts Star's growth and development above his own desires.