If you ever get a chance to visit Japan, be sure to drop by Oigawa Railway Line. They have real life size thomas, percy and Hiro (perhaps even more characters). Based on the photos one of my friends posted, Hiro is the most realistic looking.
My Trackmaster/Tomy/Plarail Photo Gallery Page (over 600+ photos and still under construction)
https://www.flickr.com/photos/183311600@N03/
https://www.flickr.com/photos/183311600@N03/