He first appeared to check on his large rabbits (which he refers to as "bunny rabbits"), having previously sent Orson the grammatically incorrect message "The bunny rabbits is coming!"
He later made a more prominent appearance (and was named) when he became the new rooster of the farm. He proved to be mostly effective, especially with the chickens, easily rivaling Roy. Eventually, Roy admits defeat and decides to leave. However, when the Weasel arrives to steal the chickens, Plato is revealed to be a coward (or at least as far as weasels were concerned). When Roy manages to save the chickens, he wins them over again, leaving Plato jobless.