I thought we already had that dragon on a cloud. I forgot his name.
Altaria? Altaria is Dragon/Flying. Thundurus Therian forme is Electric/Flying. Aside from Zekrom, there are no Electric/Dragon Pokemon.
Agreed. Actually, I'm pretty surprised there aren't that many "obvious" dual-typed Dragons. The vast majority are Flying. Dragon/Electric, Dragon/Fire, Dragon/Water, and Dragon/Ice are represented only by Legendaries (and Kingdra, in the case of Dragon/Water). Disappointing. Let's get some more myth-inspired Dragons that don't turn out to be Dragon/Flying.
lee-oh-leh-ee-ah. The most pedantic nitpicker to ever nitpick.