Neptuna

Neptuna is the first boss on Desert Island in the game Croc: Legend of the Gobbos, seen in the level The Deadly Tank of Neptuna.

Biology
Neptuna appears to be an anthropogenic fish, excepting the fact that he has no legs but a fin instead.

Origins
He was created by Baron Dante's magic that made a fish (a tuna, presumably) into a trident-wielding demon.

Name Origin
He probably got his name from being turned from a Tuna fish and holding a trident, and just acting like the old Roman God of the sea Neptune.

Method of defeating
He is one possibly one of the hardest bosses to beat, considering the fact that the level is underwater, which causes Croc's movement to be slower than other boss levels. Croc must wait until Neptuna has shot damaging beams from his trident before advancing and attacking him with a tail spin. Because it is so difficult avoiding these beams, it is worth collecting crystals in the beginning of the level to avoid losing a life.