There isn’t any copyright infridgement on this one. You can keep your OCs as part of your copyright.
In advantage, you can also keep the world of Seraphia as part of your story building without destroying the mlp vibe by basically using another world. Basically that is Seraphia is, another mlpverse so different from mlp that it’s practically used already in a video game I’m making for commercial use.
Seraphia doesn’t reference any MLP characters at all, instead they have replacement characters. For more details, please do contact me.
I want to help keep those content creators create more content without getting sued by Hasbro.
For those who would know, Seraphia is currently a WIP Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License world.
But for those who I’ve asked permission to add their characters and those who avail for commercial license, it’s
Creative Commons Attribution-ShareAlike 4.0 International License.