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Earth, also known as Terra, is the home planet of Humans and many animal life forms. It is a Level 2 planet[1][2] that is currently owned by Ben Tennyson.[3]


Prime Timeline

When Azmuth first discovered Earth, he called it "Terra".[4][DJW 1] Many other aliens that have set foot on Earth since then, such as Inspector 13, have referred to the planet as "Terra".[5]

Most of Earth's myths and legends come from alien encounters in ancient times.[6][7] For example, Stonehenge is a Galvan practical joke and the pyramids were built by Tetramands,[8][9] with the assistance of humans and two Galvan.[10][DJW 2]

After the Incurseans were driven back and Earth was spared from being conquered, aliens began to live on the surface along with humans.[11]

Paradox's Failure Timeline

Professor Paradox showed Ben, Gwen, and Kevin a possible future where Earth became a desert wasteland after the Trans-Dimensional Monster got out of Los Soledad. Fortunately, this future was prevented by Ben.[12]

Rex's Universe

Rex Salazar lives in a parallel version of Earth where E.V.O.s and the organization Providence exist and nearly every living being is infected by Nanites. Ben was taken to this Earth during a battle with Alpha.[13]

Mad Ben's Dimension

In this dimension, Ben Tennyson was mentored by Maltruant and Vilgax the Benevolent. Instead of using his Omnitrix to be a hero, Mad Ben established himself as a warlord and the tyrannical master over the remaining people in post-apocalyptic Bellwood, turned to a desert wasteland.

Mad Ben enslaved his subjects and forced them to dig and work to the point of collapse in search of Maltruant's missing time key, and forced them to keep working even after Maltruant retrieved his time key and left. However, Mad Ben was defeated in a fight against Ben Prime and Ben 23, and was imprisoned by his freed former subjects for the crimes he'd committed against his world.[14][15]

Dimension 23

Dimension 23 has a different history than the main dimension. Dimension 23's Bellwood is similar to Ben 10's but has the Mr. Gyro franchise replacing Mr. Smoothy.

Ben 23 found the "Hero Watch" just like in the original series, but had to teach himself how to use it because his Max passed away before the Omnitrix arrived. Ben uses the Omnitrix for fame and fortune, and believes that all aliens are evil (except for his aliens) until his counterpart Ben Prime arrived in this dimension and changed all that.[16]

No Watch Timeline

Not much is known about this timeline aside from the fact that the Omnitrix does not exist in it, indicating that either this timeline's version of Azmuth never had the inspiration to build one, or the Omnitrix was indeed created, but was destroyed during the confrontation between Vilgax and Xylene.


In this timeline, during the stop at Yosemite National Park at the start of the summer vacation, Gwen found the Omnitrix instead of Ben.[17][18]

Protector of Earth Timeline

In this timeline, Vilgax planned to send Earth into the Null Void and stole Omnitrix pieces from Ben, leaving him with just Four Arms and Heatblast.

Enoch obtained the Cannonbolt part and tried to stop Vilgax from sending Earth to the Null Void, but was prevented by an unknowing Ben.

Ben obtained the XLR8, Cannonbolt, Wildvine and Perk Upchuck parts and defeated Zs'Skayr, Kevin and Vilgax.

Vilgax Attacks Timeline

In this timeline, Vilgax looked for energy orbs to power his Null Void Projector to send Earth into the Null Void. Ben destroyed all the orbs and sent Vilgax and Psyphon to the Null Void using Alien X. As a reward for his heroic, Azmuth unlocks the Master Control for Ben.

Albedo turned into Negative Alien X and was trapped motionless for nearly a year.[19][17]

Race Against Time Timeline

In this timeline, Eon first appeared on Earth in the early 1800's (Just under 200 years before the events of the movie). The Plumbers had been fighting mostly supernatural threats up until then.[pop-up 1][20] He is defeated and put into deep freeze in a facility called 'Kim Labs'.

Video Games

Ben 10: Protector of Earth

Earth is the main setting, with the Tennysons traveling all over the United States to battle enemies.

Ben 10: Ultimate Alien Cosmic Destruction

Earth is the main setting, being the location where the Potis Altiare was sent by the Galvan when it crashed on Earth many years ago.

Notable Inhabitants

Non-Native Species


  • Earth is an open system.[24]
  • Earth is located in a key strategic location for taking over the galaxy.[24][25]
  • Earth is the richest source of iron in the universe.[26][27]
  • Aliens are not allowed to urinate in Earth's bushes as it could lead to an environmental catastrophe.[28][29]
  • "Htrae", which is Earth spelled backwards, is apparently Earth's secret true name.[30]
  • Ma Vreedle refers to the Solar System as the "Sol System." [31]
  • Earth having dolphins, white lab mice, and humans as sentient life forms is a reference to The Hitchhiker's Guide To The Galaxy by Douglas Adams, in which dolphins and white mice are more intelligent than humans.


Derrick J. Wyatt


Celestial Bodies
Seen Planets
AldabraAnodyneAnur TransylAranhascimmiaAugstakaCoda CodaEarthEncephalonus IVGalvan PrimeIncursean HomeworldKhorosLepidopterraMikd'ltyMonarchPantophagePeptos XIPeptos XIIPetropiaPisccissPlutoPoiana LüncasPrimusRevonnahSulcusT.K.Terminus IIITurrawusteVilgaxiaXenon
Unseen Planets
AeropelaAndesiteAnur G'rrnayAnur KhufosAnur MillganAnur OrmerowAnur PhaetosAnur VladiasAppoplexiaArburiaAul-TurrhenChalybeasChordelta Star World BetaColeop TerraFlors VerdanceGilli-Perambulous PromenadeHathorJ'HambaH'JKeplorrKinetKiusanaKylmyysLewodaMethanosMolluskusNemunimos IVPattersoneaPolyominusPrypiatosRinga MorrSangerosiaScalpascSightraSotoraggTechadonTerradinoTesslosThalassiaViscosiaVulcanVulpinX'Nelli
Sapient Planets Satellites Locations in Space
Galilean (Gravattack, Orbit Man)Evolved Galilean (Ultimate Gravattack) Galvan BLuna LoboMoonMyceto Great Vault of SulcusEdge of the Galaxy IncarceconNull Void IncarceconPerplexahedronSpace Cafe
Stars Star Systems Galaxies
Pyros Anur SystemGalvan Star SystemShadow Realm Andromeda GalaxyMilky Way
Other Celestial Bodies
Cosmic StormsForge of CreationNosideen QuasarTeslavorr Nebula
Retconned Non-canon
ChroniaOsmosOsmos V CorundorIgnisLignumMorOtesiZvezda