Agnaktor is a Leviathan that uses its tough snout and great strength to burrow through rocks and sometimes even cave ceilings. It is encrusted with hardened lava that can be softened from the heat when they spit magma or burrow.
Agnaktor is in many ways similar to Lagiacrus; both are quadrupedal Leviathans of similar size and body shape.It is noted for its remarkable ability to swim through lava and tunnel through solid volcanic rock (though the rock becomes far more liquid if you go a short distance down). Its body is covered in a lava-like armor which hardens when cooled and softens when heated. It has a drill-like beak which is lined with rows of needle-like teeth.
The Agnaktor closely resembles the Uroktor in essentially every way; the only real differences are the size of the Agnaktor and its ability to get magma to stick to its body. Even the ability to fire blasts of fire are present on both, though the Agnaktor is capable of unleashing a coherent beam.
The average length of an adult Agnaktor is 2714.7cm. Agnaktor has developed the remarkable ability to swim through lava, meaning it can both sneak up on prey and escape from a more powerful enemy. It has a very strong beak, which it uses to burrow straight through hard volcanic rock at incredible speeds. It can even launch itself into the 'ceiling' of an area with this great speed. It also uses its beak to crack open the sturdy shells of armored prey. Agnaktor is capable of producing a powerful lava beam, which it can maneuver a full 360 degrees with its long neck. While swimming it swallows some of the lava and stores it in its body so that it can produce its powerful lava beam. Produced between Agnaktor's scales is a non-flammable substance that never burns. This substance allows Aganktor to coat its hide with lava and swim in lava. The molten rock on its body will eventually harden into a thick armor of rock, but when the Agnaktor touches lava, its coating becomes soft again. Its chest and beak armor will also soften if it fires its beam. Furthermore, its beak armor alone softens whenever it attacks by jabbing its beak through the ground, exposing it to the lava underneath. This harder coat of black rock as it cools down, as well as the softer skin armor when it heats up, may represent a tactical adaptation, trading defense for a fire element or vice-versa.
Agnaktor are reasonably aggressive. Despite Agnaktor being powerful predators, they are known to leave their habitat when a powerful monster appears or during a volcanic eruption. During the Breeding Season, both males and females will swim to the summit of an active volcano to mate, this is also where most Agnaktor learn the dig through the ceiling technique. The female will then make a nest somewhere near the top and then give live birth to 2-30 individuals at a time. Agnaktor who use the ceiling digging attack has mated at least once in their life.