Volcanica is enormous, as he is several times larger than Valgren who was 10+ meters tall, and he has shiny pale blue scales along with intelligent looking eyes.
Volcanica is mentioned to be a cynic by Shaula. In his appearance, he was mentioned to feel great pity for the state in which Valgren had ended up in. Volcanica speaks in a deific manner favouring the archaic pronouns thou (汝 nanji) and mineself (我 ware). His voice conveys his omnipotence, and his desire to uphold the ancient covenant.
Volcanica is a Divine Dragon who several centuries ago made a covenant with Farsale Lugnica to help safeguard and guide the country in times of turmoil. For this reason he is worshiped as a national deity and become the new symbol of the royal family. Lugnica itself is also partially named after him in full "The Dragon Kingdom Lugnica".
Over 400 years ago, Sekhmet drove Volcanica past the Great Waterfall just so she could rest, causing a fight to occur between the two with Sekhmet falling from the Great Waterfall while fighting, concluding with her death.
During the events with Stride, Volcanica appeared because of its contract with the Lugnican royal family and healed the wounds of all survivors, including those who were at the brink of death and extinguished the burning fires.
Dragons's Blood/Dragon Vein: A special property of his body that acts as miracle agent. It's said that's capable of curing any disease and even reversing famine instantly. Only the rulers of Lugnica have access to it.
Vast Intellect: He has enormous knowledge and possibly foresight to foretell the future.
Divine Mana: Volcanica has an enormous amount of mana in its body and is even able to cleanse the world with it. The effect is enough to turn off the flames or spread them throughout the city or to cure injured people all at once.
Purification Breath: The dragon's breath, which when let loose rushes straight forward to its target enveloping it in a bluish light. When the light envelops its opponent, the opponent is instantly turned into dust, as if they had been purified. Volcanica used this attack against Valgren to put him to rest.
Great Power: As the Divine Dragon and the safeguard of Lugnica, Volcanica has considerable power.