The Green Tea-Rex is a fictional creature that is a cross between a Tyrannosaurus Rex and a tea in a bag. It is a gentle giant that is known for its love of peace and tranquility. The Green Tea-Rex is said to have originated in the mountains of China. It is said that the tea plants in the mountains were so pure and healthy that they gave the dinosaurs that ate their long lives and peaceful dispositions. A Green Tea-Rex Sticker.