Was this 'Milky Way' character really an OC, though? I thought it was simply a background character from the show that people decided to obsess over.

Milky way is an oc that someone made that has crated. the blog is found here.

http://milkmare-of-trottingham.tumblr.com

It is a nsfw blog about a pony who produces milk from her large breasts I think. I don’t actually follow the blog so I don’t know. But it is an oc and living off of someone elses oc isn’t okay.

You can’t just take someones famous OC and make them younger. You can do that with canon characters but not with OCs because it’s disrespectful to the original creator of said OC. Whatever fame you get from it is just leached from the original and the original might already have a plan for backstory or something. You can’t just use someone elses OC as your own.