Can I include free assets in my blueprint content?

Distribution UE Marketplace
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1

I’ve made a combat system in Blueprint that I am planning to put on the matketplace. For the preview of the combat I use characters and animations from mixamo and Epic’s free content. Can I keep these or should I delete all of them and only include the blueprints?

Thanks for answer

2

For example Paragon characters.

3

Are you able to clarify what Epic free content you are referring to?