2. All of them are teenagers (Jack Frost is technically roughly 300 years old, but has the body of a 17 year old).
3. All of them showed great courage in dangerous situations.
4. The respective movies all were successful at the international box office. Tangled and Brave both made over $500 million, How to Train your Dragon came within $7 million of that mark, Rise of the Guardians made over $300 million.
5. None of them grossed enough in the U.S. to be in the Top 200 (ticket inflation adjusted) according to Box Office Mojo.
6. All four of these characters are computer-animated.
7. All of them did well, but not the best with critics. The average score for these movies is about 7/10 (except Rise of the Guardians, which is 6/10).