User blog comment:Ixarising/High School DxD Dream Battle/@comment-16281343-20140114093516/@comment-24421137-20140114094009

Vritra has a wide array of techniques but he is the weakest of the dragon kings Tannin is one of the most power devils in the underworld even though he is a dragon and is powerful even when compared to a dragon so I would have to go with Tannin