Not much is known of Penguin's childhood or early career. He is from Cincinnati, Ohio. He the former owner of the Penguin Publishing house, where BoJack's book was published, and currently works for MBN.
Pinky is a play on the British publishing house Penguin Books. However, he worked at the publishing house Penguin for some time, and was involved in many business failures, notably the Swamp Monsters of Malibu where he spent twenty million dollars in marketing.
Penguin manages to save the publisher by getting BoJack Horseman's autobiography published. However, he leaves the company before the book is published, and is hired at the network MBN.
He has a troubled relationship with his children, who he wants to care for and see, but often cannot, due to his publishing house failing and him nearly going bankrupt.
In Mr. Peanutbutter's Boos, Pinky is seen at the Halloween party in 2009 wearing a "Will Publish for FOOD" sign as Will Work For Food Loafer in Interstate 60. He won the costume contest, but then it turned out he'd just lost all his belongings in a fire, and those clothes were all that he owned
Pinky is a very timid, anxious, extremely worrisome penguin, who is desperate for a best-seller to earn enough money to take care of his children and keep his company in business.
He is not a bad person at all, he does care about the companies he works for.
Pinky Penguin: I have some good news for once. I just got promoted to head of programming. I'm no longer a passenger on the burning wreckage of an industry that is broadcast television. I'm a captain!