Robert admits he will never make a crossover to action films. He fears he will never land a role in a major action film because he's so puny. The Twilight Saga star is insisting he's plagued by shyness and lacks the confidence and bulging muscles to convincingly pull off that tough guy image. He tells Empire magazine, 'I'm taking baby steps and hoping people keep employing me. That's my biggest problem, confidence, I'm not buff enough for robot movies.'