'Captain America' Passes The Test In This Exclusive Clip

Captain America is many things: a soldier, a hero, a… gerbil? That's Colonel Chester Phillips' assessment of Steve Rogers, at least.

In this exclusive clip from "Captain America: The First Avenger," which we debuted tonight during MTV First: Captain America, you're invited to see the heroic origins of the skinny weakling that eventually became one of the world's finest superheroes, a status he didn't achieve through brain or brawn; he achieved it through pure guts.

The scene begins with Colonel Phillips and scientist Abraham Erksine walking and talking as they observe the goings on at a military training camp. Among the trainees is skinny Steve, still in no condition to be considered anything but a physical weakling.

"When you let a 90 pound asthmatic onto my army base, I let it slide," Phillips tells Erksine as he studies Steve from across the way. "I thought, what the hell… maybe he'd be useful to you, like a gerbil."

Phllips wants to use Erksine's super soldier serum on someone more physically fit for the job, despite the scientist's inclination towards Steve.

"He's big, he's fast — he's a soldier," Phillips says of his preferred candidate. "You don't win wars with niceness, doctor. You win wars with guts."

To prove his point, Phillips tosses a dummy grenade into the middle of the training exercise. But the point backfires when his "soldier" flees the scene and "niceness" saves the day, as Steve hops on the grenade to prevent the blast from decimating his surrounding allies.

"Get away! Get back!" he shouts, before noticing that, hey… this grenade isn't going off. "Is this a test?" he asks innocently enough.

A begrudgingly impressed Phillips turns to the clearly pleased Erksine: "He's still skinny."

Tell us what you think of the clip in the comments section and on Twitter!