Calvaros is also known as the Archmage. He invades the Siver Star Tower, which was formerly his castle, on Lillet Blan's fifth day attending the academy. His prescene incites a panic as he procedes to devoid the tower and its inhabitants of life. The teachers (and the students) are unable to halt his progress and only Lillet Blan, after mastering all the magical arts through use of the five-day looping caused by the Philosopher's Stone, can stop him. He was also the creator of the Philosopher's Stone together with Lujei Piche and Gammel Dore.
He is voiced by Toshifumi Maeda in Japanese and Kirk Thornton in English.