Lagiacrus

Lagiacrus is a blue Leviathan that mostly dwells in the sea/deep bodies of water and comes onto beaches to sunbathe. It has a hood-like crest on its neck to aid in sunbathing. Lagiacrus is the flagship monster of Monster Hunter 3.

The dermal spikes on its back glow white when it is using strong thunder attacks, and its mouth gurgles with Thunder when it is enraged. Lagiacrus is found only at the Deserted Island and Flooded Forest. It's most at home underwater, but is more than capable of fighting on land.

When a Lagiacrus is fully sunbathed, it turns a dry grayish-blue color and its dermal spikes turn a pale red, such as in the picture above. When it returns to the water, Lagiacrus regains a striking deep blue color and its spikes return to their original color of a very light beige.

Trivia

 * Lagiacrus shares many condition with Rathalos:
 * Both held the title of a flagship monster.
 * Both are weak to each other's elemental powers.
 * Both appear in Tri's opening movie.
 * Both have their subspecies appear in MH3U's opening.
 * Both have a subspecies that inhabits the same habitat as them and a rare species that shares habitats with Elder Dragons.
 * Both are the only old flagship monsters that can be fought in 3U's low ranked quests.

Analysis
For the damage formula (how it's calculated), hitzone charts, Lagiacrus info and more click the following links: Monster Hunter 3 Damage Formula or Monster Hunter 3 Hitzone Charts. Images created by Inkoseh.