Alexis, Duke of Sussex (Future Royalty)

Alexis Mountbatten-Windsor, 3rd Duke of Sussex was a British-Canadian-American astronaut. A member of the extended British Royal family, he was the son of Archie, Duke of Sussex, and Olympia Ohanian. His paternal grandparents were Prince Harry (1st Duke of Sussex, who was the second son of King Charles III of the United Kingdom of Great Britain and Northern Ireland and the younger brother of King William V) and Meghan Markle (American socialite, Duchess and former actress who had moved to the United States with her husband Prince Harry and her family), and his maternal grandparents were Alexis Ohanian (founder of Reddit), and Serena Williams (one of the greatest female tennis players of all time). He was also a staunch African-American activist. His brother, Max, is a politician, and also an astronaut.