The Gigantoraptor is brown with a dark blue coat. It has a short tail with blue feathers at the tip and a red chest. Surrounding its eye is a blue patch and an amber ring. For unknown reasons, the game lags when this dinosaur is played as.
Gigantoraptors are a darkish purple color, with a whitish grey nose, they have a red flap/scale on the top of their head, as well as one under the tip of their tail, they have medium sized sharp whitish grey claws on each foot. The Giganto is obtainable by surviving 10 days as an omnivore. As an elder, this is the largest omnivore in the game.
Thanksgiving Gigantoraptor or Turkey Giganto was obtainable from a promotional code in Thanksgiving of 2016. The skin resembles a giant turkey.
The Cockatrice Giantoraptor was a skin released during the 2017 Easter Event. It is currently unobtainable, and Chicken Engineer has not announced anything related to obtaining it. It is likely based on the mythical Cockatrice, a creature that is part Dragon and part Chicken.