This is TopKazFatt's OOn6.5 model of Rex, along with two arlesdale hoppers. The Body is a brass boiler, on a Graham Farish
V2 body. The chassis is a Z scale 2-8-2. Why not check out his other projects:
https://www.youtube.com/user/topkazfatt
The Three Images above were drawn by the site admin. (Jack Taylor.) The depict three Ratty engines as their Sodor counterparts.
The Sprites above were created by 01salty of Sodor Island Forums. Better quality versions can be found there too.
