'Arry and Bert are simply downright villainous troublemakers. They have been known to attempt to scrap Stepney, make Percy and James "middle engines", and make the engines believe Neville was planning to bump them. They also teased Henry about his special coal by calling him "Mr. Special Steam". According to merchandise bios, they also wish to scrap Oliver.
'Arry and Bert are unquestionably devious and scheming. Although at first they had a heartened dislike for steam engines, they appear to have accustomed to their smoke-puffing companions and now only have a "friendly rivalry" with them.
- Kerry Shale (UK/US; Series 14 onwards)
- The 2 are not quite identical: 'Arry speaks with a North London accent and Bert speaks with West London accent. Bert also has more stubble than 'Arry.
- In some merchandising the twins are named "Iron 'Arry" and "Iron Bert".
- 'Arry and Bert's Hornby models have Splatter and Dodge's faces.
- The metallic release of 'Arrt and Bert in Take-Along has a spelling error on the character card: it reads "'Arrt and Bert".
- Some merchandise bios and even the Thomas and Friends website say 'Arry and Bert are called "The Grim Messengers of Doom" because of their grim job of melting down engines.