Theo James Is the 'Perfect Warrior' in 'Divergent'

If excitement could be measured numerically, we'd need to start counting now to measure ours for the release of "Divergent" on March 21. But, then again, we can pretty much guarantee we'd get stuck once we reached four.

Four, in case you haven't heard, is one of the main characters of the bestselling novel series by Veronica Roth and is played by the undeniably handsome Theo James. In this exclusive featurette introducing them both, you can see why such a count might be distracting.

"Four is the perfect Dauntless warrior, but he also has his own secrets that he has to hide, so he's incredibly guarded and wary of anybody trying to get close to him," director Neil Burger explains.

What's not a secret is the chemistry between James and his co-star, Shailene Woodley. "Theo's reactions are amazing, his capability of listening is incredible, but he's also tough on screen and a really strong person," she gushes.

Oh, and did we mention he did all of his own fighting? Because he did. According to stunt coordinator Garrett Warren, the combat footage is "100 percent no stunt double."

[Related: Theo James Gives Us a Chemistry Lesson on the Set of 'Divergent']

There's one more thing you should know about Four. Or, rather, the Forth. On Tuesday, March 4, at 12 p.m. ET, advance tickets for "Divergent" go on sale.

"Divergent" opens everywhere on March 21.