• The twins have been confirmed multiple times by the show staff to not be royals. They are not a prince and princess.

• Despite this they both (Praxina in particular) have quite a bit of knowledge about the royal family of Ephedia and in Praxina’s case Xeris as well. The latter, according to the staff tumblr, can be attributed to the Xerian royal family being well known across the planet.

• In Lucky Star Mephisto wields a staff he says he received from his Pappy. This is a broad nickname that could be used for several male relatives. However in the French dub Praxina instead calls their relative “Grand-pere”, meaning Grandfather. This confirms that the twins are the grandchildren of the now former (current before Gramorr took over) court jester of Ephedia. This is most likely referring to the kingdom of Ephedia where Iris’ parents rule, as opposed to the planet.
• As this staff is only passed through the male line we can also assume that the twins’ father or any uncles are out of the picture.
• The fact that it was given directly to Mephisto implies that he will be the one to follow in his Pappy’s footsteps and become the next jester. Theoretically Praxina may have gotten a similar item through the female line to cement her role.
• Mephisto’s reluctance to tell her about the staff and her negative reaction upon seeing it could mean that Prax resents her future role as co-jester with her brother.
• We see a similar resentment of privilege in Lucky Star when Praxina disparages Lily Bowman’s mansion. Remarking: “What a vulgar display of luxury”. Perhaps a comment made by a former servant embittered by a lifetime spent seeing Ephedian royalty having the best of everything in their own palace back home.
• Speaking of home Mephisto makes several references to Ephedia as home, but these could be construed as referring to the planet Ephedia itself or the Kingdom of the same name.

• The twins consistently display great acrobatic talent both as individuals and as a duo. We see this in “Sirens” and “Dancing Shoes” to name just a few.
• Praxina in particular has an affinity for flips, and is often seen doing back handsprings to avoid getting hit by spells.
• All skills that would be odd in a normal citizen or soldier, but make sense for those who had been training for a jester’s position during their earlier lives.
• They continue this training during the current timeline (as seen above in “Sirens”) despite no longer serving the crown. Including moves that are very obviously not combat related, implying they had a history of performance.
• All in all I believe with what evidence we have there’s a pretty decent case for this being a large part of the twins’ past. It influences their physical actions, interactions with others, and overall personalities to such a degree that it should be at least considered as a possibility when thinking about their backstories. ¯\_(ツ)_/¯

Lolirock reference with designs for Missianova ⭐

Punkfairyofgreenday

Eiirlys

Amon Ra

Sateisa

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KuDemeitix