Favourite Side villain.

[Fynn]

Xande is not a side villain. I could say the same thing about Seymour but I know it would be a waste of time to bring up this topic.
i had a feeling about Xande

same with seymour. but i ended up saying that Sin was the main.

It is not about being "wrong"; just that Dark Cloud and [Sin] can hardly be considered real villains.

Oh, they're villains all right. Even Big Bads. But not primary antagonists, and that's the difference here. An antagonist doesn't have to be a villain, just someone opposing a protagonist. If they're their main opposing force throughout most of the story, they're a primary antagonist. So Xande, Golbez, Edea, and (arguably) Seymour are primary antagonists.