Cosmica The Explorer

Hemera's only daughter and the first official Queen of Night in the Butterfly lineage. Born with an adventurous spirit, Cosmica formed a close bond with her maternal cousin Pyxar despite the tension between their mothers. As that bond turned into a Forbidden Love between the two, Glossaryck took advantage of both Cosmica's dreams of adventuring throughout the known worlds and love for her cousin to implant the seeds that would culminate in the princess earning the Butterfly Family's dimensional scissors.

She and Pyxar discovered and registered multiple dimensions together.
Determinator: Getting the approval to marry her cousin was piece of cake after spending ten years chasing Hekapoo in order to gain dimensional scissors.
Deliberately Monochrome: Prefered less 'pompous' clothes, favoring black and white dresses.
Kissing Cousins: Married her cousin Pyxar.
Older Than She Looks: Thanks to chasing Hekapoo's clones through the Neverzone for five minutes, Cosmica is actually ten years older.
Satellite Love Interest: Many readers have noticed that most of her life accomplishments were thanks to Cosmica's determination to be with Pyxar. Even her "Tales of a Buterfly Queen" doesn't narrate her ten years long quest for the scissors nor any of her dimensional travels, but instead how Hemera decided to let them continue their relationship after seeing how commited they were. Something her biography already told us.
She was awkward and uncomfortable around boys except for Pyxar. Later the author confirmed her to be demisexual, explaining why she was only interested in her cousin.
Star-Crossed Lovers: The reveal of her romantic relationship with her cousin, in a time it wasn't still well looked upon was an utter shock note and thanks to being fueled by her aunt's hatred of her by proxy of hating her parents, Cosmica and Pyxar were forcefully separated. They would sneak out their distant rooms to see each other nonetheless.
Trademark Favorite Food: Peaches. That Pyxar wrote a poem saying his beloved had kisses "as sweet as a peach" clued everyone about their secret relationship.