A Mad Scientist, an Alicorn Princess, and Two Royal Guards are only some of the ponies in these stories.
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This is a spin-off of the Spawn of Disharmony series, and takes place in the same universe as it, but is about some of the side characters. Except if a chapter's about Princess Filia Solis. Then it takes place in the universe in Seth Disarmonia and the Univesre Hopping Princess. If you haven't read those stories, even though no necessary, it'd probably make more sense if you did.