Grymwelte

A practitioner of enhancement magic at the "Tenth Rank." The stronger the effect of the enhancement magic, the more the target takes on a black hue, earning him the dragon name "Black Magic Dragon." However, due to his youth among his kin, Grymwelte has not yet fully mastered his abilities. In his human form, he appears as a robust middle-aged man and can create multiple black, sharp tentacles and flames from his own blood to attack. When instructed by the Dragon God to destroy the Kingdom of Leese, he attacked Ronabera under the orders of Altematia.

In the original timeline, he conquered Ronabera and killed Leo, who was protecting Ragna. However, in the altered timeline, he was intimidated by Ragna's Silver Battle Technique, transformed into his dragon form, and was immediately frozen and destroyed by Ragna.

His dragon form is depicted on the cover of Volume 1 of the manga. Although unrelated to the main story, he prefers to be naked in his private life.