Grumwelt

Grumwelt (グリュムウェルテ, Guryumuwerute) was holding the Eleventh position of the Winged Dragons.

Plot
Grumwelt arrived in Lonavera leading a dragon army with him and started killing everyone he sees. Ragna tried attacking him from behind, but his sword broke on impact and Grumwelt then burned him, sending him in the river. Seeing that Leonica came wanting to kill him for injuring Ragna. She tried fighting him, but was no match. Leonica then wondered if he was the dragon god or something and that made Grumwelt laugh, commenting he was just a lowly peon ranked Eleventh in the Winged Dragons. He then revealed the reason for their attack, the nearby town had the dragon god protection, because he liked some sweets from a specific shop, but as the shop got attacked by thieves, the dragon god told them to just waste the whole nation. Leonica was shocked as Grumwelt kept explaining the ruins of human would be just a whim from the dragon god. As he prepared to kill her, he felt something and turned back. He saw Ragna approaching with new powers and turning dragons into ice from his silver aura and touch. Grumwelt felt fear like he the one from the dragon kings. He couldn't accept it and released his true dragon form, preparing to use his most powerful flame, but was turned to ice in an instant by Ragna, who the with a flick from his finger shattered him to pieces, killing him.