Dialga's reason for becoming immensely obese are his own, don't question them. Fact is, he refuses to lose weight and refuses to discuss the matter with anyone. Despite being on all fours, his belly touches the ground and his legs and neck are *incredibly* **thick**. He's still the God of Time, though his lazyness prevents him from utilizing his powers effectively. Feed him and you'll have him in your grasp. He's less childish than his brothers and more level-headed.