Question: is aang younger than katara?
Answer: 9 THE AGE DIFFERENCE Though Aang is technically over 100 years old, he's biologically only 12. And though Katara herself is only 14 at the start of the series, the gulf between a 12-year-old and a 14-year-old is far greater than that between a 30-year-old and 32-year-old.