Sunshine can be occasionally cheeky at times, but he is very strong willed nevertheless. He is quick-witted and takes action swiftly without hesitation. He is generally level-headed and cheerful, and takes on most jobs with little complaining. He also appears to have a slight crush on Sally Seaplane.
Sunshine also can figure things out very quickly, as in "Jinxed" where he points out that each of jinxed tug Boomer's unfortunate mishaps occurs right after Ten Cents sounds his steam hooter, suggesting a cause-and-effect relationship. He's also more open-minded about unusual phenomena such as ghosts than Ten Cents is. On the subject of whistles, Sunshine's is middle-to-high pitched and has a distinct 'whooping' sound which could best be described as 'upbeat', suiting his personality and name.
Sunshine works mainly with Ten Cents, the Star Fleet's first and larger switcher. They have shared many adventures, almost to the extent that it is impossible to imagine one without the other, and they are both the best of friends.
Sunshine has a rather soft Newcastle (or Geordie) accent and whistles most of the when he speaks, because he is missing some of his front teeth. He wears a red, flat cap on his wheelhouse or his head.
- Sunshine will meet Winnie the Pooh, Thomas, Twilight Sparkle and their friends in Pooh's Adventures of Tugs.
- Sunshine is great friends with Percy.
- Sunshine will meet Sora and His Friends in Sora's Adventures of TUGS