Why is Aura the Guillotine so popular ?

I don't mean to be rude but I genuinely do not get why people seem to like her so much. I've seen so, so, so many arts of her on Reddit or social medias like Fb and Twitter.

She was a one time ennemy, albeit strong and scary, that got absolutely boddied. She was a tool to show just how much more powerful Frieren is (as well as showing how much Frieren has changed with Himmel, with the fact that she frees the souls rather than destroy it all).