Mother T. rex

The Mother T. rex is a female Tyrannosaurus who lived in Vulture Valley in Vietnam.

Early History
In the Cretaceous, the Mother T. rex mated with the Father T. rex, becoming pregnant. Late in her pregnancy, the pair were brought to Vulture Valley by the failure of the first Russian particle collider. The pair destroyed the facility and created a nest within the valley's bamboo forest, where the female would lay her eggs. While one of these eggs was stolen by a group of Russian scientists such as Andrei Wynn, two would successfully hatch.

Arrival of Vulture Squad
At least a year later, Vulture Squad members Ryan Baker and Leon Vernesstumbled upon the nest on their mission searching for a missing platoon of Green Beret. While attempting to sneak out of the nest, the Mother awoke and spotted the them, giving chase until she spotted her mate appearing to continue the chase. She returned to her nest until she heard a distress call from her mate, whom she found after he fell into a river at the bottom of a cliff. Forced to hunt by herself, she took her young and searched near a Russian Compound. While there, one of the guards at the compound killed one of her young, causing her to kill the other guard and attack the facility through the open gates. She attempted to wake the youngster, but with no response she turned her rage on the humans and easily took out most of the soldiers there before her mate broke through one of the walls. The pair greeted each other before noticing Sergei Medvedev watching them, who lured the pair into charging into the building housing a new collider, where the remaining members of the facility were hiding. The pair slaughtered the remaining personnel before regrouping with their one remaining offspring and chasing Grigory Borodin out into the wilderness. They chased the man until they noticed nearby Utahraptors, forcing them to give up the chase in favor of protecting their remaining infant.

The Hunting of Stalker Force
Another year later, Stalker Force, while tracking a pack of Utahraptors were accidentally lured into the nest. While attempting to escape from the Father T. rex, Xavier Wise ran towards the nest to lure the beast away from it. The male chased him, but lost Xavier when he turned into the bamboo and allowed the male to check on the groggy Mother, whom had been sleeping before her mate's stomping had woke her. The Father would continue his chase of Stalker Force after that, leaving the Mother to fall back to sleep.

Personality
The Mother T. rex is very close to her family, lovingly vocalizing and nuzzling with her mate and chicks whenever she returned to them. While calm in these interactions, she was fiercely protective of her family, rushing to both her mate and young's cries of panic. Whenever one of her young was killed, she broke into a state of rage and attempted to completely rid the jungle of her offspring's killers, only ending her bloody campaign when she felt her infant was endangered by the presence of the Utahraptor pack.