Unlike Skarloey, Rheneas was stern and thoughtful and fell out with Skarloey after the latter called him a "stick-in-the-mud" following an argument over cabs. The two reconciled after Rheneas saved Skarloey from a landslide.
Rheneas literally saved the railway by keeping service through a very lean period in the late 1940s. By 1950, Skarloey was in need of repairs, leaving Rheneas to run the line. He managed to pull a full train home one rainy day despite jammed valve gear and thus was rewarded with an overhaul. His overhaul took place in 1961 and was returned to the Skarloey Railway soon after.
Rheneas returned to service in 2002 after an overhaul that was started in 1999.
- Rheneas will meet Pooh and his friends in Pooh's Adventures of Thomas & Friends: Blue Mountain Mystery and Tigger refers to him as "Rheneas boy".
- After Stuingtion's films, Rheneas will have 2 AK-47's (with shoulder press).
- Rheneas along with Skarloey are best friends with Twist.