Daisy is a Diesel railcar.
- Season 2 - Scrambled Eggs (does not speak)
- Season 3 - Thomas and the Evil Diesel (does not speak)
- Season 5 - Rusty to the Rescue (cameo) and Bull's Eyes
- Season 6 - Resource and Sagacity (cameo)
- Season 8 - Percy's Predicament
- Season 9 - Old Tricks,
Daisy is likely to appear in the tenth season.