Max and Monty are two Devious and Troublesome Dump truck Twins.
They are numbered 15 and 16.
Plot:[]
Max and Monty were reckless, rude, devious and troublesome. Despite this, They were being good hearted when they are sternly scolded by Miss Jenny.
Appearances:[]
- Season 7: Stanley, Whiff, and The Troublesome Dumptrucks
- Season 8: Jack is Back, A Challenge for the Controller, Tick-Tock-Jock (cameos) and The Almighty Alfie
- Season 9: Peter Sam and the Flour (cameos)
- Season 10: Captain's Crunch
- Season 11: Station Situation (cameos) and Duncan in the Dumps (do not speak)
- Season 12: Greetings, Montague! (not named; do not speak), Stafford's Electric Slide (cameos), Scottish Blues (mentioned), Percy Gets a Promotion, Bulgy Takes the High Road (cameos) and The Mystery Train (cameos)
- Season 13: The Duke of Hazard (do not speak), Oliver's Fossil Fright and Ivo Hugh's Day at the Zoo (cameos)
- Season 14 (cameos): Quarry Quest (either one), Hiro and the Heat Wave, Furious George and James in a Jam (Max only)
- Season 15 (cameos): Harvey's Happy Accident, Jock Beats the Clock and The Island Of Misfit Engines
- Season 16 (cameos): Sweet Sixteen, Luke Dukes It Out and Knock it Off, Stanley
- Season 17 (cameos): Hard to Handel, Oliver Confusion, Thomas' Crown Affair, and Para-Norman Activity
- Season 18: Steam Team Dream (cameo, fantasy)
Specials:
- Saving Pirate Ryan (Max only; Monty cameo)