Melaniez, Unai and Sandi parental figure. He used to be a famous alchemist in the Underground city and was Hella rich like rich enough to where he rivaled Big mama. He was always brash and was taught to look down on the poor. He wasn't a bad dude just arrogant. He found the newborn Melaniez in the human world and after learning she was ill with a rare sickness injected her with a secret formula he made, mutigen. He took her back and made her pretend he was her father. Now Baron Draxum was his partner but was curious about the young girl. He kept a close eye on her. Soon he found Unai and mutated him then Sandi who was an infant at the time. Big Mama was furious though cause he insulted her at a dinner party she hosted so she payed Draxum to find dirt on Oshai. Draxum found out that the children he took in were human and basically was gifted minions from Big mama. In the lab he attacked Oshai and tried to kill the kids, only succeeded in gravelly injuring Melaniez. Oshai fought back and stole some weapons and escaped in the human world. Thankfully he never showed Baron his human form so with a clocking necklace he now hides in the human world. He became deeply depressed but pretended everything was fine but became a lazy, selfish bumbling oaf who tries to use quick rich schemes to get the money he lost in the underworld