"My personal trainer needs a personal trainer."
―Rat, telling Goat about Bennie.
Bennie was a man who worked as a personal trainer (first appearance: April 18th, 2017), who was hired by Rat. At first glance, he appears to be a very buff man who is serious about working out, but he is in truth very lazy and gluttonous , and when Rat refused to work out and instead offered to drink a beer with him, Bennie agreed.
Goat later encountered him on Rat's couch, where he had passed out while eating Cheese Poofs and drinking more beer, to which Rat sarcastically replied that Bennie needed a personal trainer.