Armored trains constantly roam the tracks in Rail Canyon and Bullet Station. Various characters speculate that they are carrying important cargo, though this is never confirmed. Unlike Rhinoliners from the same stages, armored trains do not have weapons and will not actively try to harm the players. However, they can cause damage if they collide with the characters or if the player touches the flames on top of them. They are also much larger than Rhinoliners (traveling on two-three rails rather than one) and they are indestructible.
In other media
In the Sonic the Hedgehog comic series and its spin-offs published by Archie Comics, the armored trains are referred to as Bullet Trains. In this media, they are transportation vehicles used by the Eggman Empire. One was used to transport Professor Charles the Hedgehog, Professor Dillon Pickle, and their research to the Rail Canyon Zone, but the professors were saved by the Freedom Fighters.
- In Super Hard Mode of Rail Canyon, one armored train can strangely ride over a gap without rails though this may be intentional to increase the difficulty.