Jascony

Jascony is the code name for the giant creature in the centre of Dinosaur Island, and is the main and final boss of Blue Stinger. Its egg was the meteor that crashed on Earth 65 million years ago that caused the extinction of the dinosaurs during the Cretaceous Period.

Jascony began hatching in 2000 A.D., causing an earthquake to plummet the surrounding Yucatan Peninsula (Southeast Mexico) into the Gulf of Mexico, and remained dormant until 2018 A.D.. Researchers discovered this creature, curious as to why this 'island' was left intact after the earthquake, and began conducting scientific experiments with its DNA. Its DNA, named "Dinosite", alters its hosts body by changing its skin composition and bone structure. It also removes its hosts ability to speak properly, and grows appendages throughout its body.

It is later revealed that the monsters faced throughout this game are all byproducts of Dinosite cell testing.

Tips
A good strategy when battling Jascony is to run to the edge, use a high-damage weapon (Eliot's Bazooka, Dogs' Super Bazooka, etc.), then run to the other edge, avoiding close contact with it. If you go close to it, it will step on you. After you take it down to half-health, Jascony cracks the earth below it, falling down, leaving its torso, arms, and head exposed to attack. Keep doing the same technique, because even though it's less mobile, it deals just as much, if not, more damage than before.

It's generally very difficult to avoid damage from Jascony, and you also have to protect Janine atop the tower before fighting Jascony, so make sure you're well equipped with ammo and healing items before starting the final battle(s).

Trivia
Jascony may be a reference to Jasconius, a giant sea creature mentioned in The Voyage of Saint Brendan. Between 512-530 AD, Saint Brendan the Navigator, Irish patron saint of mariners and travelers, searched for the Garden of Eden, landing on many islands off the coast of Great Britain. They make camp on a mysterious island, but quickly vacate after the island starts moving, revealing that it was actually a giant sea creature.