Penguins are a group of aquatic, flightless birds living almost exclusively in the southern hemisphere, especially in Antarctica. Highly adapted for life in the water, penguins have countershaded dark and white plumage, and their wings have become flippers. Most penguins feed on krill, fish, squid, and other forms of sealife caught while swimming underwater. They spend about half of their life on land and half in the oceans.

Although all penguin species are native to the southern hemisphere, they are not found only in cold climates, such as Antarctica. In fact, only a few species of penguin live so far south. Several species are found in the temperate zone, and one species, the Galápagos Penguin, lives near the equator.

There is a sapient species of penguin called the Huguin. They live mostly in colonies underneath the Antarctic surface. Unlike most other races they have yet to develop many technologies. As such, scientists believe they are a relatively new species. A few have left Antarctica and become successful in the world- one is the former president and current second-in-command of the Australasian Defence Force, Fiddletoe.