WMG / Queens of Mewni

Hesperia's true parentage and how Marco is secretly a Butterfly as well.

Even on the character sheet it's noted that there's a strong resemblance between Febe the Red One and Marco's mother Angie, and Occam's Razor would point to them being related somehow. And there's one particular spot of note in the family tree where a possible link between Febe and Angie can be found: the children of Vesper the Morning Star.

It's been speculated, even in the family tree, that Melody the Kidnapped had given birth to a child during her captivity. I not only suggest that this is true, but that the identity of the baby is actually Hesperia the Singer of Dusk, whom Solaria took in, claimed was her own daughter, and raised her in order to preserve her beloved sister's final legacy...which beggars the question of what happened to the baby Solaria had been pregnant with. Now, again, the easiest explanation is Solaria's baby was stillborn, but my theory is Solaria gave birth to a son. And she knew as well as everyone else that a male heir to the throne would be unacceptable to the people, and she had no desire to see her son develop an inferiority complex or be superseded by Hesperia or any potential daughters Solaria had (which is ironic, considering canon), so she used the dimensional scissors and turned her son into a Doorstop Baby on Earth...who happened to land on the doorstep of Angie's ancestor. So that's how Marco can claim descent from the Butterfly family as well: as the descendant of the son of Solaria the Monster Carver, while Star is a descendant of the daughter of Melody the Kidnapped. (It is also possible that something happened during her giving birth that made it clear to Solaria that she'd never have more children, hence her need to ensure Hesperia got the throne despite being technically a bastard.)

• This might even explain why Hesperia and Aurora are anomalies in the 'star-day-night queen' prophecy. If Solaria did have a surviving child (either the theorized boy or a girl she believed stillborn but somehow ended up on Earth), then it's a branch line on the throne that should not be. (And if Melody never married Hesperia's father, it's an illegitimate line, to boot.) Hesperia is the Dusk Queen because she is not part of the 'true' line of the succession, but the false one, hence the 'dusk' of the true Queens of Mewni. And Aurora is the Dawn Queen because she's where the true line (Marco) and the false line (Star) are united and the rightful rulers are restored, hence the 'dawn' of the renewed Queens of Mewni.

Galaxia's choice to keep Venus as heiress was never about her, it was about Helia.

As powerful as Helia was at birth and became later, can you imagine the chaos that would ensue if she found out she should have been queen, but was displaced because they decided her mother was unfit and her aunt became queen instead? And worse, her hated cousin Crescenta would get it over her? Helia would probably be a threat to Mewni as a whole if she never became queen. And THAT is why Galaxia insisted on Venus being her successor. She foresaw what would happen if Venus's daughter didn't get the throne and chose to preserve Mewni's existence, upcoming Dark Age be damned.

Luna would not have spared Meteora.

I know everyone likes to think Luna would have taken her half-sister in, but as someone who arguably has been in Luna's shoes, I think all Luna would see in Meteora is 'her replacement'. And while I'm old enough and mature enough to know murder is not the best solution, Luna is only a child and would be immature enough to think differently. Perhaps in another timeline she would be called Luna the Ruthless for killing a baby.