Melian is an extremely carefree, and extremely sadistic, individual. Never displaying any concern or worry in any event, he seems fully confident in his abilities. Incredibly sadistic, he finds joy and entertainment in the suffering of others. He is, however, incredibly lazy, preferring to let others do the dirty work while he spectates and mocks from the sidelines. He appears to fear nothing, instead viewing just about everything as a joke. Even in events that affect him negatively, he has never displayed any persona other than sheer amusement. He also does not seem to feel any form of connection to the Mirage, though he follows the orders of the High Samaritan for the most part as they are usually entertaining.
Nothing is known about Melian's early childhood, the first records of his existence are of a common street rat. He spent the first half of his teenage years simply doing whatever it took to survive, before finally leading his own gang later on. By the age of twenty, he had become one of the leading figures in the underworld, with many notorious gangs reporting directly to him. It was all going smoothly until the meltdown killed nearly everyone under his command. Maintaining his usual persona, he laughed it off, eventually finding the Mirage, whom he joined.