Sol Cliver is a smart, charismatic, and quiet person. He's usually preoccupied by his research or books. He works as a researcher for a large science company. He's quite considerate towards people he likes, but when it comes to people he truly cares for, he goes above and beyond to please them. As the eldest son of a wealthy businessman and the heir to their family wealth, he can sometimes come off as cold, but that's only for people he doesn't usually know.