Dragons of the world of Ashan.

What are the Great Dragons actually like? Maybe they could be realistically implemented, and a campaign could be created where the hero wants to kill them, finds a way, and then at the end of each mission, there's a battle with such a Great Dragon – one that occupies 8 squares, has 10,000 hit points, deals 2000 damage, and has attack and defense values of around 200! And then you could just tear them to shreds!