wow that detail suit but it does seem bit off since the person nearly almost standing in the suit

It could be they wanted Toothless' head to be higher for better photo ops, or just to make it easier on the performer. The main thing I noticed is that the legs are too long for Toothless, but what can you do. If you use a shorter person inside, then the whole suit would probably have to be smaller to make it manageable, so you can't win.

Still, it's a nice suit. I'd love to give it a try and wear it.