Phaeton

Phaeton was a resident of Soltown and was slated to be the fifth gas giant.

Appearance
Phaeton's appearance is unknown, as Phaeton may not have existed, have existed formerly, or have died. Phaeton's description varies between sightings, but Phaeton is apparently blue, no rings, or no moons.

In the Phaeton sightings that are known of by residents of Soltown, Phaeton seems to walk similarly to a bipedal reptile and exhibits unnatural body features, making Phaeton's humanity dubious.

Personality
Sightings of Phaeton seem to suggest that Phaeton is aggressive similar to a ram or dangerous creature. Phaeton has apparently left behind destruction in their wake, as Phaeton may or may have invaded several small towns.

Mystery
Phaeton may or may not be an urban legend to the Exos. If Phaeton exists, there should have been at least a date for Phaeton to have left whatever town Phaeton originated, though it's likely Phaeton was a resident of Soltown, and left somewhere before the formation of the tinier planets.

Phaeton's status as mythology makes Sun angry, presuming Phaeton may have been forced out, or killed. Phaeton is often considered deceased and is known to most as the cause of the asteroid belt region.