Red Claw is a Tyrannosaurus Rex and the main antagonist in the Land Before Time TV series. He has a distinctive scar from his left eye to his left hand, with the blood apparently colouring one of his claws bright red; similarly to the T. Rex Scarface, from Land of the Lost (though Scarface's scar was on the right). Chomper and Ruby refer to Red Claw as the biggest and meanest of all Sharpteeth. He is voiced by Pete Sepenuk.
Sharptooth and Red Claw
Red Claw could have been the villain from the first Land Before Time film, who somehow survived, save for the boulder that was pushed ontop of him giving him a distinct scar. Some fans think Red Claw could be Sharptooth's twin brother.