Leon had met Dwarves in Crossroads City, whether common Dwarves or Gray Dwarves; they were generally a head shorter than humans, or even more, but they were exceptionally sturdy, and their weights might exceed those of humans who were much taller than them.
Leon wasn't interested in Dwarves, but he was quite curious about Iron Hammer Castle, as he had never seen a Dwarf Fortress before and had heard that its architectural style was completely different from human buildings.
Leon wanted to go to Iron Hammer Castle.
He was not afraid of the Dwarf Lord, who was said to be able to defeat a Red Dragon alone. After all, he had no intention of provoking the Dwarf Lord by appearing in Dragon Form above Iron Hammer Castle. He just wanted to visit the fortress in human form. If he did get discovered by accident, couldn't he just run away if he couldn't fight it out?