The first trailer for Avatar: The Way of Water revealed that its story would focus on the blended family that ex-human Jake Sully (Sam Worthington) and Na’vi Neytiri (Zoe Saldaña) started after the original film. As surprising as it was to see that Jake and Neytiri had seemingly adopted a human child, in a recent interview with Empire magazine, Cameron shared more details about the couple’s other child, Kiri, that may indicate she is the more interesting of the two brothers. . Despite Kiri being a teenager, Cameron revealed that Weaver will play the character and that the 72-year-old actress had “all kinds of fun” working with real-life teenagers to develop a sense of the kind of person she is. “Sigourney just got younger,” Cameron said of Weaver’s performance on set. “She looked younger, had more energy, and never left Kiri’s side the whole time of conception. She had a sparkle in her face and a lightness in her step and a fun spirit.” Interestingly, Cameron also shared that Kiri is adopted, which means there may be some sort of connection between her and Dr. Augustine in addition to being portrayed by the same actress. Weaver didn’t share much about her new character, but she did describe being able to enter Kiri’s teenage years with familiarity, recalling how awkward she was at that age herself. “I felt strongly that Kiri would be uncomfortable a lot of times,” Weaver said. “She’s searching for who she is. I was thrilled to be given this challenge by Jim.” Avatar: The Way of Water hits theaters on December 16.