Valhallarama's title 'White Arms and Chunky Thighs' is a unique descriptor that adds to her character's charm and individuality in the 'How to Train Your Dragon' series. It's a playful nod to her physical strength and stature, standing at an impressive 6'3". As a Viking Hero and the wife of Stoick the Vast, these physical attributes likely contribute to her prowess in battle and her ability to train dragons, making her a respected figure within the Hairy Hooligan Tribe.