Roswaal L. Mathers

Roswaal L. Mathers is the lord of Roswaal Manor and the Mathers Domain, the current head of House Mathers, the Dragon Kingdom of Lugunica's Head Court Mage, and the margrave of the Kingdom's western territories. Since the age of 14, Roswaal has been possessed by the soul of his ancestor, Roswaal A. Mathers. He set up the events of Arc 1, played a supporting role in Arc 2, Arc 3, Arc 7, Arc 8, and Arc 9, and he was the main antagonist of Arc 4. Although supporting Emilia's quest for the throne, he was actually using her, Subaru, and Ram for his own goals, which involved killing the Divine Drago...

Roswaal comes across as an eccentric due to his flamboyant appearance and odd speaking style, the latter which he shares with his grandmother. He often comes off as a friendly enough person, if weird, to speak with, usually behaving light-heartedly with the people around him. Roswaal cares about Ram...