You decide on Dauntless and end up in the same batch as Tris, Christina, Will, Peter. There’s one thing you do know it’s that this won’t be easy. Your instructor is Four

Four : My name's Four.

Christina : Four, like the number?

Four : Exactly, like the number.

Christina : What happened, one through three were taken?

Four : What's your name?

Christina : Christina.

Four : The first lesson you learn from me, if you wanna survive here, is keep your mouth shut. Do you understand me?