Rainbow Pass

The Rainbow Pass are special cellular-like devices that all of the Train Quantum Guardians have, functioning as their belt buckles & communicators. It also allows them to board onto the Trainzords, for which it would be impossible to enter without. Also, they can be used like credit cards to access Wagon's concession cart or to purchase items anywhere they journey to. However, also like a credit card, the funds are not without a catch: they have to repay the money they had spent on non-returnable items (like food) by performing chores on the train.