Caerulea is a character created by LoonyLuffa for the strange waifu thread/discord server. She is the daughter of Orchid who is a kaiju pony who was impregnated by experimental lab created sperm created from kaiju genetics. Thought of this idea while brainstorming for my new story "Strangefu Superheroes!" which incorporates many of the "strange waifu" pony characters from the thread/discord that have adapted to life in the human world. Rebecca is a character originally thought up by Loony as Caerulea's first human friend other than her adopted father. She's playing chess with Caerulea!

I'll use this opportunity to promote my new story, where Caerulea could be considered the main protagonist: https://www.fimfiction.net/story/537634/strangefu-superheroes

Thanks to Mutter for doing a great job on this Comm!