Iron Bert (also known as Classic Bert or Bert) is an engine in the Classics theme.
- Neon Iron Bert
- Electrified Iron Bert
- Iron 'Arry/Iron Bert as Shazam! (from DC Super Friends 9-Pack 1 (2016) and DC Super Friends 9-Pack 3 (2017))
- Jelly Fish Iron Bert
- Space Iron Bert
- Iron Bert shares the same mold with Diesel, Paxton, Sidney, and all their variants.
- Iron Bert's re-release features "Ir-Bert" on his chassis, possibly because of spacing.