Tyra was a pink and light peach colored underside colored, with dark pink stripes along the back, female Tyrannosaurus rex, who ruled over the Upper Valley, a massive Cretaceous period valley that would eventually become the town of Terra Dino. Despite being a predatory Tyrannosaurus, she was a kind, fair and caring ruler to many of her fellow dinosaurs, she is cool, calm, and collected in most situations and is shown to be a proud and loving mother.