9. Quiet is definitely not Chico

Fans believed that, due to his trauma at the end of MGSV: Ground Zeroes, Chico had a sex change and became Quiet. This theory gained more traction when fans discovered that Joosten was voicing both Chico and Quiet. However, while this was an interesting theory, both Kojima at TGS and Stefanie Joosten (on episode 9 of the Kojima Station)  have confirmed that Quiet is not Chico.

I can see a bit of a resemblance though

10. Big Boss is foreshadowed to kill her

Despite saving Big Boss at some unknown time, Big Boss still states that he's going to be the one to kill Quiet because she has to die eventually. This could explain her absence in the later games of MGS. Kojima has also hinted at this by stating that whether Quiet is “friend or foe has yet to be revealed.”

This is not the face of mercy

Now we wait...

There you have it, 10 things you need to know about Quiet. Now all we have to do is wait for September 1st to roll around and we can finally learn more about her past and the nature of her powers.