Before anyone mentions Poison, Serperior is a nonvenomous constrictor snake, don't be dumb pls.
Serperior doesn't quite fit or feel like a Dark Type so there is only one option, Grass/Dragon. Now, I did USED to think this was a dumb idea but I understand now it does make a lot of sense for a few reasons
>Serperior seems like it's vaguely based on the Garden of Eden snake. This snake was originally called a dragon. In fact snake = dragon is a very common connection in various western European mythologies
>Serperior's imposing stare makes weak-willed adversaries freeze up and go stiff in fear. Which is a reference to the basilisk, which is a very dragon-esque creature
And lastly, just think about it. Serperior is supposed to be kingly and high-status. Dragon Type is the king of Types, basically representing raw power and the top of the food chain. If Serperior were Grass/Dragon, then suddenly all that stuff about it being imposing and lordly starts to make sense. It would actually have a REASON to regard itself as above everyone else because it is a dragon, and Dragon is the most high-status Type.
