"Tachyon device tracked you on Earth-38 when you met her, so you should find her there."
Cisco Ramon to Barry Allen on Kara Danvers.[src]

Earth-38[1] is one of the many universes in the multiverse. It is the home universe of Superman and Supergirl.


Alien life has been common knowledge for over a decade on the Earth of this universe - in particular, the Kryptonian heroes Superman and Supergirl. Barry Allen accidentally traveled to the Earth of this universe while testing out his Tachyon device and was able to return home with Supergirl's aid.[2]

A few months later, Barry and Cisco traveled to the Earth of this universe to recruit Supergirl's help[3] in facing the Dominators.[1]

When Cisco and Gypsy had a duel over the life of H.R. Wells, they crossed the dimensions and landed on this universe's Earth, in the office of James Olsen. They were seen by Eve Teschmacher fighting before vanishing into another breach.

Recently, the atmosphere of Earth has been seeded with a trace amount of lead, making the planet uninhabitable to Daxamites. Though by the 2400s, a cure will be invented by L-Corp, allowing said species to stay on Earth without any problems.

Events (in chronological order)

Possible future

Notable individuals



From Earth-1

From Earth-19

From Earth-221

From the Fifth Dimension

From the Monitor's realm

From unknown Earths

Known locations



Season 1

Season 2

Season 3

Season 4

Season 5

The Flash

Season 2

Season 3

Season 4

Season 5

Season 6

DC's Legends of Tomorrow

Season 2

Season 3


Season 6


Adventures of Supergirl

The Chronicles of Cisco


  • Barry Allen went through a series of names from individuals on his Earth and Earth-2, seeing if they exist on Earth-38. After running them by Kara Danvers and looking them up online, it appears that Harrison Wells, Cisco Ramon, Caitlin Snow, Green Arrow, Black Canary, the Atom, Firestorm, Zoom and even himself, as the Flash, all either do not exist or at the very least don't share the same names and identities of their counterparts.
  • While Central City still exists on Earth-38, S.T.A.R. Labs does not.
  • The existence of extraterrestrial life is common knowledge on Earth-38, whereas only a small number of individuals outside of the government know of them on Earth-1, at least in the 21st century.
  • It is identical to Earth-1 in many ways such as aesthetics, time, the existence of real-life figures such as celebrities, politicians and artists, currency, law enforcement, crime, vigilantism, government, mass media, fine art, history, historical events, holidays, politics, political issues, the internet, magic, life, everyday life, physical laws, nature, Greek Mythology, science, popular culture and technology unlike many other Earths.
  • There have been numerous encounters with genies including some who may have been Imps that have been documented for centuries on Earth-38.
  • The F.B.I. (Federal Bureau of Investigation) and The United States Army both exist on Earth-38 as well.
  • The Chemical compound "DT Dichlorodiphenyltrichloroethane" (also known as DDT) existed on Earth-38 as it was been Banned by the American government who then destroyed any remaining stockpiles of it.

Behind the scenes


  1. 1.0 1.1 "Invasion!"
  2. "Worlds Finest"
  3. "Medusa"
  4. "For Good"
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