parent nodes: Arrowverse | Earth-1 | Earth-2 | The Flash
Earth-2 was a universe that was parallel to Earth-1 and many other Earths in the original multiverse. The name was coined by Martin Stein. Harry Wells once thought of it as Earth-1.[1][2]
After gaining a connection to the Speed Force, Hunter Zolomon started subjugating Central City to his will. Wanting to be even faster than he was at the time, Zoom increased his speed through the use of the velocity drug, wreaking terror and nightmares throughout the city.
In 2019, when Earth-1's Oliver Queen and John Diggle visited Earth-2 as a part of the former's mission with the Monitor, an antimatter wave vaporized the entire universe, leaving the fate of most of its residents unknown. The only residents of this Earth that are known to have survived its destruction are Shay Lamden, Linda Park and Laurel Lance. However, Linda's status is unknown following the destruction and restoration of the entire multiverse. After Oliver Queen died while battling the Anti-Monitor and reformed the universe, Earth-Prime was formed, which contains most elements of Earth-1, Earth-2, Earth-38, and Earth-TUD5. As such, while this Earth may be physically gone, it appears that some of it's people (who are now refugees) and other certain individuals (like Hunter Zolomon for example) and certain aspects of it live on as part of Earth-Prime.