gaylordsteambath said:

I guess, Got any links? So far ive never seen any

https://e621.net/post/index/1/wishy_washy

https://e621.net/post/index/1/backy

https://e621.net/post/index/1/double_entrendre

Now I think it would be reasonable to just change the tag to "Spark" but unfortunately you get anything tagged with a spark in it, and not the character, so the distinction has to be made that it's a character. Although it's weird, some OCs like Cobalt Snow's "Cherry" don't have a tag at all. Some OCs do, some don't. It seems arbitrary. If it helps at all, I did end up posting several images of Spark, and there could very well be more, so its not just a single tag here.