Espinas is an Elder Dragon-Level Flying Wyvern species that is well-known for defeating an unknown Elder Dragon. This wyvern is closely related to the Zenith Espinas, Espinas Subspecies, Espinas Rare Species, and Meraginasu.
Due to the spines that adorn it's body it is shown that it is at the top of the food chain in the Rain Forests. Common prey include Bullfango, Mosswine, and Aptonoth. Espinas have to compete with Rathian, Abiorugu, Mi Ru, Nargacuga and Zinogre for food and territory, though Espinas have even been known to fight and beat Elder Dragons in battles over territory, further showing their impressive strength.
Espinas get the title, Thorn Wyvern, due to the many thorns found throughout their body. The thorns are very tough, sharp, and ooze poison when Espinas is angered. The miasma, from the thorns, is enough to stop someone from touching the thorns. The hardness of its shell is abnormal to a point where most attacks are repelled, though some scars can still be seen. It isn't easy to damage this shell without Espinas being angry. If greatly damaged while the threat is attacking or if the threat is truly a danger, Espinas will become aggressive as a last resort. Blood veins will be seen on its body, making its armor softer but also allowing it to move faster. By making its armor softer, it makes it so the armor doesn't inhibit its movements. This means that Espinas gives up defense for a good offense. While enraged, Espinas are able to breath poisonous fireballs at their enemies. These fireballs not only burn prey but, also poisons them. These poisons not only slowly kill prey but also can even paralysis prey. Even if a creature survives a blast from the fireball, the poisons will eventually spread throughout the body.
The Espinas is an entirely docile creature, until it is enraged. Espinas are known to lay perfectly still while sleeping due to this being their hunting style. While sleeping, the green color gives it good camouflage in its environment, making it just mimic the background though not perfectly. If prey is close enough, they may or may not strike it. Compared to other Flying Wyvern species, the hunting style of Espinas isn't at all very aggressive. Usually if attacked to a point where it wakes up, Espinas won't bother to attack the threat. The reason why is because of its thorny body being the perfect defense and offense. They use this to their advantage and usually wait for the threat to give up. Espinas will occasionally swing their tail, flap their wings, and bite at enemies to make them give up quicker.