Pre-Era: a Universe in Chaos
+ More than 100,000,000 years ago:
The existence of Planet Kaio can be confirmed.
+ About 75,000,000 years ago:
Old Kaioshin (the Kaioshin from 15 generations ago) is sealed in the Z Sword by some being.
+ About 5,000,000 years ago:
Madoshi [sorceror] Bibidi creates Majin Boo. In the numerous years that follow, hundreds of planets are destroyed by Boo.
Of the five Kaioshin, four are killed by Boo.
Madoshi Bibidi takes Boo's sealed ball to Earth.
The East Kaioshin defeats Bibidi. Boo's ball is left where it is on Earth.
+ Numerous tens of thousands of years ago:
Annin (Taijoro-kun*) undertakes management of the Hakke Furnace at the Gogyo Mountain** that borders Kono Yo [the world of the living] and the Ano Yo [the world of the dead].
+ 4237 years ago:
Garlic Jr's ancestors, the Mazoku [evil clansmen], move residence from Planet Makyo to Earth.
+ 739 years ago:
The God of the Snake Way becomes the Snake Princess and sets up home in the middle of the Snake Way.
+ About 238 years ago:
The Super Saiyan as spoken about in Saiyan legend appears. The universe trembles violently from destruction and slaughter.
* a Tao god
** Goku Son, the monkey king of the Journey West legend was first burned in the Hakke Furnace (Eight Trigram Furnace) and then sealed beneath Gogyo Mountain (Mountain of Five Elements), which were actually the five fingers of Buddha's hand.