The adventures of four penguins—Skipper, Kowalski, Private, and Rico, who perform various commando-like missions to protect their home in the Central Park Zoo. The penguins often have to deal with problems caused, or made worse, by their zoo neighbors, King Julien XIII (a ring-tailed lemur), Maurice (an aye-aye), and Mort (a mouse lemur).

Cast: Tom McGrath, Jeff Bennett, James Patrick Stuart, John DiMaggio, Danny Jacobs, Kevin Michael Richardson