There could be a dark spirit that has been awakened by the little brother's emerging powers. This spirit is angry at being disturbed and decides to target the little brother. It causes chaos in Arendelle, blaming it all on the little brother. As the story progresses, the little brother has to find a way to either defeat or pacify this dark spirit to save his home and family.
Well, one possible plot could be that the little brother has some unique magical abilities that are different from Elsa's ice powers. Maybe he can communicate with animals in the enchanted forest and has to use this power to save the kingdom from a new threat.
He could go on ice - climbing adventures with Elsa. Since Tarzan is so good at climbing trees in the jungle, he might adapt well to climbing ice cliffs in Arendelle. And with Anna, he could explore the forests around Arendelle, sharing his knowledge of the wild.
Well, in fanfiction, anything can be possible. Maybe it could be due to some magical cross - over event. Perhaps a powerful magic combined the different worlds of Tarzan, Elsa, and Anna, and as a result, Tarzan became their brother in this fictional scenario.
I'm not sure specifically who Anna Poliatova is without more context. She could be a fictional character based on a real - life prototype or a real person whose story is being told.
Well, Anna Delvey was a person who created an elaborate false identity. She made people believe she had a huge trust fund. She used this fake identity to get credit from various places. For example, she stayed in luxury hotels and ate at expensive restaurants without paying. She was able to deceive many people because she seemed so confident and wealthy. She was very good at networking and getting into exclusive events, which helped her maintain the illusion of being a rich heiress.
Anna Delvey is a woman who made headlines for passing herself off as a wealthy German heiress in New York's high - society. She managed to infiltrate elite social and financial circles, conning banks, hotels, and wealthy individuals. She used her false identity to live a lavish lifestyle, staying in luxury hotels and dining at expensive restaurants without actually having the funds to support it.