Big Bird (O-02-40) is an Abnormality in the form of a big, round, black, featherless bird, with arms instead of wings. It has 17 visible yellow eyes (though it's implied to have at least 47 in one of its flavor text quotes) and a sharp beak, which contains pointed teeth and a second smaller beak inside. It holds a lantern with a wick of its melded feathers inside it.