Thread:PeaVZ108/@comment-8138569-20180524181754/@comment-30384301-20181017020830

Yes.

I just thought of Giovanni's backstory. He's a normal human from Echo Creek ever seeking for fame and respect, until one day, Star Butterfly came to Echo Creek and fought off Ludo and other villains from the SvtFoE universe. As the citizens of Echo Creek cheer for Star each time she saves the city, Giovanni wants to be just like her and find the secret to her powers. He eventually discovers that she is from Mewni and her magic wand is her primary weapon which has fought off many forces of evil. One day after Star saves the day again, she goes back to Mewni by opening a portal. Giovanni follows her and ends up in Mewni. He sneaks into the Butterfly Castle and comes face to face with Glossaryck (an actual character from SvtFoE), the magic being from Star's Magic Instruction Book. Giovanni wishes to Glossaryck to help him become just like Star, which the latter agrees to on the condition that Giovanni gives him pudding. However, Giovanni's wish goes terribly wrong as Giovanni slowly becomes increasingly powerful. Before Glossaryck can stop him, Giovanni traps Glossaryck in another dimension and as his greed for power becomes stronger than his desire to become a hero just like Star, Giovanni becomes an all-powerful villain ready to conquer any world before him.

I also thought of a backstory for Corolla Amethyst. About 300 years ago, she used to be an amethyst gemstone from the Amethyst Kingdom in Gemstonia, where magic sources are rich and gemstones who live there desire to be professional wizards and witches. Corolla is no exception. She used to be a classmate and best friend to Amelia Amethyst, as the both of them are enrolled in the same magic school. One day, Corolla gets upset about the fact that she will never become a good witch so she turns to Amelia's help. Amelia agrees to help, intending to cast a spell that will help Corolla become better at witchcraft. However, she accidentally casts a spell that turns Corolla into a superpowered human instead. Disgusted and flabbergasted by her new look, Corolla breaks their friendship and stays away from Amelia, before going home. At home, Corolla looks through her spell books to find the cure to return her to her regular amethyst state, but to no avail. Realising that she can never be back to normal, she has no choice but to adjust to her new state. Throughout the course of adjustment, other amethysts except Amelia begin to treat her differently in a negative way. Corolla gets angry at her new life and how others are treating her, but she decides to deal with it and stay positive by working even harder to become a professional witch and graduate from magic school. However, the last straw came for her when Corolla isn't allowed to graduate for the reason of "not being an amethyst". Corolla reaches her breaking point and leaves Gemstonia for good, ready to take on a new approach in life as a superpowered human.

As for how Corolla joins Giovanni, I'm thinking that Corolla will want to join Giovanni so that she can feel like she has company, as being neglected by the other amethysts has left her in solitude for a long period of time. Sorry that this took so long to finish.