Tigrex is a large, quadrupedal monster characterized by its massive head and jaws, powerful limbs and striking yellow/blue striped coloration. The top of its head is tipped with a pair of horn-like ears, and its segmented tail ends with a spiny protrusion.
Tigrex is a rare breed indeed, a creature adapted to survive in both the extreme heat of the desert and the frigid air of the snowy mountains. Tigrex's wings have not devolved into the wings most Flying Wyverns are known for. This allows Tigrex to run much more efficiently than other wyvern such as Rathalos, which are prone to tripping and poor maneuverability on ground. Tigrex are incredibly fast, running up to speeds of 50 km and often giving chase before leaping on top of prey and biting into the helpless creature's neck. Tigrex do not possess flame sacs like many other wyverns, but make up for this by having an incredibly strong organ that holds and controls sound to a deadly level into a strong roar that will literally knocks others too close to the creature off their feet. Tigrex's strong tail has a spiked tip and is often used as a whip-like weapon, most notably during its 360 spin attack. Tigrex's forearms have bat-like wings that it can use to glide from high elevations, or ride updrafts for greater distance. Tigrex's most unusual ability lies in its blood vessels. When the creature is enraged, blood rushes to its extremities and head to keep the creature from hurting,cramping or blacking out during its fits of deadly rage. This has led to many an unfortunate hunter's death, as it would appear that Tigrex has limitless stamina. Thankfully this is not the case, and after periods of extended rage, Tigrex must find a place to rest or it may risk suffering major injury, hyperventilating or passing out. It is also possible that large amounts of adrenaline pump through the Tigrex's body, making it faster and more aggressive. However, during this enraged state, Tigrex's body becomes weaker to attacks and is more bound to injures. Male Tigrex have larger horns than females.
The Tigrex is an aggressive monster with a short fused attitude but high intelligence. They will even challenge other dominant predators. When enraged it begins to drool and attack randomly. Tigrex's method of hunting actually changes depending on what environment it's currently hunting in. When in the mountains, Tigrex's bright yellow/orange coloration would alert prey from great distances. To counter this disadvantage, Tigrex will ambush prey. It will often try to separate the old or weak from the herd, ensuring an easy chase and a quick kill. Unlike other Flying Wyverns, Tigrexs are nomadic and don't have a territory of their own and wander from place to place in search of food. Despite not having territories of their own, they will sometimes stay in territories belonging to other monsters for both protection and food.