The Rat is a highly-strung character with little self-confidence and no capacity to hide this fact. His general jittery nature sometimes gives way to short bursts of spasmodic twitching when he speaks. His relationship with the rodent world has left him flea-ridden giving him a tendency to scratch himself furiously. As yet, his voice has not broken and on a few occasions, when threatened, has been known to scream “Eeeak”.
He also hasn't mastered the art of wearing a suit of armour and the visor of the helmet keeps falling down over his head at the most inappropriate times. Some say it's a loose hinge in his bascinet (the kind of helmet he is wearing), other say it's just too large, some might say his face does not fit in well.