>>11273881
Afaik, there are only two who have porn: Cerastes and Kaliya (aka Snake Lady).

Cerastes has scenes in both her human and snake forms, male on futa, and they're very vanilla for the series (which I appreciate).
Snake Lady is a recurring villain who's more hardcore but sadly she's always human in the sex scenes.

Mikoyan, Cerastes' artist, also did other hot futanari for the Taimanin gachas.