Molly is a yellow tender engine.
- Plarail/Motor Road and Rail/TrackMaster by HiT Toy Company (2006-2012 - Japan; 2006-2009 - UK/US)
- White/grey running plate.
- TrackMaster by Fisher-Price (2010-2014 - UK/US)
- Red running plate.
- Molly with Green Truck (Plarail, Motor Road and Rail, TrackMaster [HiT Toy Company])
- Molly with four straight track pieces (Motor Road and Rail)
- Molly with Truck (TrackMaster [HiT Toy Company])
- Molly with two half straight track pieces (TrackMaster [HiT Toy Company])
- Molly (TrackMaster [Fisher-Price])
- R/C Molly (TrackMaster)
- Molly's motor is stored in her tender, like Emily, Murdoch and Hank.
- Molly (along with Mighty Mac)'s models lack side rods, even though they have them in the TV series.
- Molly's face is based off the sculpt in the TV series but the face is the size of her promotional one.