The Collector left the Boiling Isles intending on improving himself and on learning how to make friends. What they didn't expect however, was to meet a mysterious yet familiar lady living on a spaceship with her dozen children. __________ This is a crossover between The Owl House and Super Mario Galaxy. There are Owl House spoilers for the finale of the show. If you don't know much about Rosalina I would recommend checking out Rosalina's Storybook for extra context but it isn't necessary. You can find it on YouTube and it's a pretty nice read and it tells us her backstory. Also The Collector uses he/they pronouns in this. Anyway, I hope you enjoy !