Neil is an old tank engine who worked on the Sodor and Mainland Railway. He is a simple but kind character who befriended Skarloey when he was young.
- The prototype Neil featured a thinner face and brighter S & M 2 lettering on his sides.
- Neil has a dome, however he lacks one in The Railway Series. The dome likely depicts his safety valve.
- Neil had a wooden funnel despite being introduced in 1999 when other engines were redesigned with plastic funnels.
- Neil and Lady are the shortest engines (by length) in the Wooden Railway range.