The Mournful Passenger is a monster found on the Monster Train 301. They are only present in the first room of the Monster Train, though they may be summoned by Casey Bones to attack the player in the Boss room.


The Mournful Passenger has two attacks: it can swipe downwards with its hands, or it may rush forwards with its hands wreathed in a violet aura.

The Mournful Passengers summoned by Casey Bones have a timed bomb attached to their necks which explode once they come in contact with a player, after a set amount of time has passed, or if they are attacked.


  • These monsters are implied to be the souls the Monster Train 301 ferries into the Underworld after their passing in Aernas.

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