Roark is a Wyvern that stands at about 5 meters, white in color. Eyes are blue if that matters. Wings are attached to the arms, in wyvern fashion. And claws/hands with four digits of resembling a thumb sort of. At the end of the arms Somewhat like a pterodactyl body wise. Long legs with three toed feet. Scales are lizard like. Belly scutes as seen on crocodiles are absent. Head looks somewhat crocodilian. Ear fins and horns that faced forward just under the ear fins like a rams and stretch about half as long as the somewhat pointy snout, teeth protrude from the mouth when closed like a crocodile as well. And snow white hair like feathers that ran from the back of the neck to the tip of the tail. Body type is muscled a bit though belly sticks out a bit. Kind of like how some tyrannosaurus looked really though without the tiny arms. Wing span almost half body length though arms half the length of the wings somewhere in the middle walked on two legs when on the ground using the tail to balance like a Theropod would tucking the wings away almost like a bird when not in flight.

Roark can also breath phosphorus, the feathers on his back help regulate that heat when expelled. Though because of this he can exist in any cold or heat devoid climate. He is genuinely a kind and caring wyvern, but not opposed to sinking his teeth into something. The inside of his mouth is always very warm so licks for other dragons and wyverns, might feel like a hot towel finish to them. To anything else he might be planning to eat them, as it is usually like the feeling of hot leather in a car on a hot day.

Roark also has a prehensile member like that of a dolphin though feels like that of a smooth snake minus scales, and can somewhat move as such.