P.E.T.R is a plastic bottle recycler (hence P.E.T + Recycler). P.E.T.R believes that recycling is his mission in life, unfortunately his training did not prepare him for the harsh realities of his profession: standing in a corner at the airport, day-in, day-out. Seeing how people would rather throw their bottles in the regular trash can just to save that extra step. Getting “treats” thrown at him like sandwiches and other garbage. Sometimes even people would open him to take some bottles and get the deposit on them! So he became bitter.
Now, whenever someone throws a bottle (hopefully) inside P.E.T.R, he reacts the only way he can: with bitternes. “An empty bottle, and it’s not even my birthday!”