One of the main things about the series of Senta and the Steel Dragon, is the steel dragon himself. He changes from book to book. In book 1, he’s not much bigger than a house cat and is treated generally like a pet. By book 3, he’s somewhat larger than a pony, speaks several languages fluently, and is a real part of the story. By book 5, he is pretty close to the size of a steam train engine.
In the Dark and Forbidding Land, he is a bit bigger than the average family dog, and is starting to communicate in words. He’s not really a character yet, like he is in book 3, but I had a lot of fun with him. He’s perhaps a bit more mischievous and dangerous at this age than he is when he is older and can actually think about what he is doing.