One of my friends read an article which claimed that Armin Arlert of Attack on Titan is female. Can anyone confirm or deny this?
This article included the following statement:
Q: Out of the group of female characters in the 104th Trainee Squad, who did Mikasa get along with the most?
This related article further states the following:
Isayama has revealed that Armin is a female character. Now this is a huge surprise for Shingeki no Kyojin fans. Everyone thought that Armin was always a boy but it looks like she was a girl.
Finally, here's another article discussing the possibility of Armin being female.