In Roman myths, Pales was a deity of shepherds, flocks and livestock. He is regarded as a male by some sources and as a female by others, and even possibly as a pair of deities. Its name is thought to have derived the terms "palace" and "Palestine."
"A god or goddess with a donkey's head who was worshiped from northern Africa all the way to Rome. The donkey's head has long been a sign of fertility and is often worshiped. His or her (there is some dispute amongst scholars) temple was built on Palatine Hill in Rome. The word "palace" came from this god's name."
—Shin Megami Tensei: Strange Journey compendium
Shin Megami Tensei IV
Pales is the true form of Baphomet and is faced in the Challenge Quest, Multi-Demon Fusion. Using the Demon Summoning Program found in smartphones, Pales is reborn to aid Cernunnos in his goals and the two fight Flynn. They disappear after being defeated.
Shin Megami Tensei IV Apocalypse
Pales can teach Nanashi the Mamudoon, Pandemic Bomb and Berserker God skills through its Demon Whisper. It benefits from learning ailment, Darkness and Ice skills.
Pales being categorized into the Vile race is probably due to the theory that Pales was derived from the evil Egyptian god, Set. A donkey is one of the animals that compose Seth's appearance.