User blog comment:Collbrande-Ex-Caliburn/Hyoudou Issei's Peerage composition hopes/dreams/hypothesis/@comment-26821288-20161228004608/@comment-9595671-20161228230529

@兵藤 一誠: Certain characters are still depicted the same appearance wise in them all, to give one example. The LN assumes Tannin's on four legs, but the only LN picture we get of him only shows his head, and since Ishibumi was said to helped worked on Season 3, it's likely that is the official look of Loki and Tannin.

Going by that, this could be the same case with Ddraig and Albion, and from what I rememebr the manga's original attempt at Issei's scale mail was wrong but later changed, and Tannin's manga look is his anime look, so... yeah, that's where I go with what I said. The anime is essentially what I view the LN depiction in visual form.

@contributor: I don't think there's a daughter for death, cause in DxD Hades seems to take that role, and considering Hades hates Devils... as for Tannin's daughter, if he has one that could work, though Bova I feel already took such a role away in the sense of Issei having a child of Tannin being an ally of his.