Bars

Bars are mechanics that are unlocked at level 3. They give you rewards for giving them things, such as currencies, RBU, and others.

Mechanic
You can send the bar various things by saying a command in their channel. Giving them to the bar will progress the bar. Once a certain amount of progress is reached, the progress resets, the progress limit increases, and you gain a random reward.

Trivia

 * Bars were originally supposed to slowly fill up. This idea was later scrapped.