Theo is a Shy Experimental Railway Traction Engine. He is Good friends with Merlin and Lexi and works with Them. He is a Brown, Dark Green and Red Experimental Steam Engine with a Very Big Wheel in The Middle.
Appearances: 
Edit
- Season 14: Merlin the Magical Engine (mentioned)
He Will Appear in Season 15.
Community content is available under CC-BY-SA
unless otherwise noted.
