They are evolved Rathalos that are larger and fierce than their counterpart. Zenith Rathalos entire body looked like that of the Old World Silver Rathalos, but a lot different from it. Their large white reddish forewings that developed over the years has eleven pairs of claws, and a flame texture wing membranes which featured red blackish ornate patterns. The face of Zenith Rathalos looked almost identical to Old World Silver Rathalos, but with further developed spikes, a bright red chin, a reddish white ash color scales on their cheeks, and palish green eyes. Lastly, Zenith Rathalos tail has the same flame texture as their wing membranes.
Unlike Rathalos, Zenith Rathalos are capable of making combos with their developed wings more than using flame bites and charging at hunters in close range. Also, like Silver Rathalos, they mostly prefer aerial attacks to ground-based ones.
Zenith Rathalos has poisonous talons like their counterpart and most of their relatives. However, they have something new for their fire-based attacks that hunters should be very caution about. If hit by these fire projectiles, or other fire-based attacks, hunters that have a max health bar will see their whole bar slowly depleted away until the new ailment wears off.
Like Supremacy Teostra, Zenith Rathalos tends to temporary set themselves on fire by shooting a fireball projectile that makes a fire tornado which it later go inside it, causing a big explosion of fire. Unfortunately, their wings and tails are set on fire for a long period of time. Zenith Rathalos are capable of creating fiery gust by flapping its developed wings hard.
Similar to Berukyurosu thunder slam attack, Zenith Rathalos will slam onto the ground to cause line of fire pillars to erupt. Also, they are capable of shooting multiple fireballs in a rapid pace while on the ground.
Zenith Rathalos properly might be the most dangerous Rathalos ever lived for they frequently set their wings and tails on fire from combating with hunters, and create a lot of destruction by flapping them hard enough to spawn strong fiery gust.
Unfortunately, they stay in the Volcano for its developed body needs extreme hot temperatures in order for them to ignite their wings and tails on fire, so they can defend themselves from hunters and other predators inhabiting the area. However, they can be seen in the Fortress Ruins.