You will join after passing the plot.
In the Genshin Impact game, the protagonist, Amber, Lisa, and Kaia are all characters who will join the team through the plot. Xiangling can only be obtained by clearing the corresponding layers of the Deep Spiral. Noelle is in the card pool and is a must-have for the first ten consecutive rounds. Genshin Impact's events will also give away some four-star characters one after another, and players have to draw most of the other characters from the card pool.
Many people call the brother of the protagonist of Genshin Impact Dragon Brother, but the official name is empty. He also has a younger sister called Chanmei, who is officially his biological daughter.