Neptune is the 8th planet in the Solar System. Its surface is entirely made of water. It has been said Oswald looks like Neptune after being insulted by Vriska Serket. It also has been said Tsunami resides in Neptune. During the early ages of the Solar System, Neptune adopted a child named Triton, since it looked liked they were gonna have a bad time in the edge of the Solar System.
Neptune has had an awesome career overall. He was a carpenter, a surfer, and he was even the king of the Fish Union for a little while. However, he had an argument with Earth and left after it happened. He let his lowlife son Triton to rule the Fish Union, and he was able to grow up and age very quickly thanks to all of the ruling. Right now, Neptune lives in a retirement home at the edge of the UnUniverse, fishing for Mermaids at the nearby dock (he's lonely, okay?).
Ruler of the Fish Union