Rilios

The Rilious (Rye-lee-ou-z) is a massive, omnivorous monster found roaming the Wildspire Wastes. With the largest specimen being 18 Meters Tall, it is potentially the tallest non-elder dragon Monster to be found in the New World.

Physiology
The Rilious appears similar to a rhinoceros with its snout shaped like a pyramidal battering ram, with the rest of it's body covered in tough, rock-like skin with lava flowing between the cracks. In place of where a horn would be with a rhinoceros, there is a metallic spire that it apparently uses in species competition. Unlike a rhino, Rillious feet can adapt both a quadruped and a biped stance, with the forelegs changing from legs to arms with a simple push.

The Rilious don't hunt, usually, instead digging for minerals within the sand. How it does so is the metallic spire on it's head, which can detect traces of the mineral in the air. But if it can't detect anything underneath the sand, it turns to hunting Barroths, something that is both beautiful and incredibly scary at the same time.

Like the Electragis, the Rilious uses energy it has accumulated to use it's elemental attacks. In this case, it would be the Lava that appears around the Rilious, which it regains by looking for areas rich in copper, seeing as how it is a great heat conductor, and resting on it. This heats up the cracks, turning them into lava streams, and allows the Rilious to use it's elemental attacks. How it can keep doing this (as it consumes resources) Is because of it's choice of diet. Any excess isn't used as fat, but instead stored into the cracks, which can be heated up.

Behavior
Hunters enjoy watching a Rilious search for ore, like a massive piggy looking for truffles. They are relatively docile and won't attack anything without reason, so they can walk right over a camp and not even notice the hunters down below. Of course, this behavior doesn't last forever. If something were to attack it, it will return blows and usually destroy the attacker in a series of claws, bites and charges. This usually results in leaving low rank Carves behind. This behavior is akin to someone blowing their temper, and often leaves aspiring hunters contemplating on whether to go on the attack or not.

Placement in the Food Chain
Rilious are listed as a secondary predator, being food for a creature currently unknown. Why it is listed as such is because of it's Barroth Backup meal plan.

Trivia

 * Rilious were based off the Rhino, the Indominus Rex, the Barroth, and the Behemoths (Horizon Zero Dawn)
 * More is to be added!