Every time ABSOL appears before people, it is followed by a disaster such as an earthquake or a tidal wave. As a result, it came to be known as the disaster POKéMON.
ABSOL has the ability to foretell the coming of natural disasters. It lives in a harsh, rugged mountain environment. This POKéMON very rarely ventures down from the mountains.
It sharply senses even subtle changes in the sky and the land to predict natural disasters. It is a long-lived POKéMON that has a life-span of 100 years.
It appears when it senses an impending natural disaster. As a result, it was mistaken as a doom-bringer.
It senses coming disasters and appears before people only to warn them of impending danger.
— Pokédex entries (via PokeAPI)