Ben 10 Wiki
Omni Icon.png This article belongs to the Classic Timeline
This article is about the planet. You might have been looking for the episode.

Primus is a planet that was introduced in the eponymous episode of Ben 10: Alien Force.


Primus' existence was first hinted in Ghost Town when Vilgax freed Zs'Skayr in exchange for a secret about the Omnitrix. Zs'Skayr replied with a single word: "Primus." This secret is later revealed to be the existence and location of Primus in the eponymous episode, where Primus appeared.

Intending to disable the Omnitrix and take it from Ben, Vilgax went to Primus. Sensing his arrival, Primus called Azmuth and the Omnitrix. The Omnitrix left Ben to Azmuth to help him defeat Vilgax. Vilgax eventually defeated Azmuth and took the Omnitrix, but was unable to use it. Upon learning how important Primus was for Azmuth, he threatened to destroy it, but Ben was able to trick him in order to take the Omnitrix from him and defeat him. After Vilgax was gone, Azmuth moved the location of Primus so Vilgax could not find it again.


Primus (214).png

Actually a giant organic machine created by Azmuth, it was the source of the DNA samples for the Omnitrix and Ultimatrix.

Primus appears as a jungle-like planet, full of vegetation and various unintelligent alien life forms, some of them were dangerous. The main creatures on Primus are Volaticus biopsis, mosquito/wasp-like robots created by Azmuth that traveled the universe in order to find new alien DNA to add to the Codon Stream. Primus seems to have a mind of its own, as it was able to call Azmuth when Vilgax arrived.

The main element of Primus is the Codon Stream, a green liquid substance present throughout Primus. It actually serves as the database for the Omnitrix, containing all the DNA the Volaticus biopsis found in the Milky Way Galaxy. The Omnitrix communicated with this database, which gave it the information necessary to modify the wearer's genetic code and allow them to transform.

Notable Inhabitants

Non-native species

Notable Visitors


Alien Force

Season 3

Ultimate Alien

Season 3

Video Games

Naming and Translations

Language Name Origin
Spanish (HA) Primus From the original English name; pronounced /'prʌɪmus/ (normally) and /'prɪmus/ (Simian Says).


  • Primus was supposedly erased from continuity in Omniverse by the Annihilargh in So Long, and Thanks for All the Smoothies.[DJW 1] Derrick's reason for doing so is because according to him, since one of the Omnitrix's functions is as a storage device, there is no need for a backup.[DJW 2]
    • However, this is not definite as it wasn't addressed in the series.[MW 1][MW 2][MW 3] Derrick also later stated no retcons were caused by Ben recreating the universe, putting his original statement into question.[DJW 3]
  • The Unitrix is not connected to Primus and has no need for its function as it was intended to store each alien DNA sample in its own separate container. As such, it does not have a wireless receiver like its later models, the Omnitrix and the Ultimatrix.
    • Azmuth later added a one way connection to it so it could upload samples on its own. While active, this feature can cause interference with a nearby Omnitrix core that is connected.
  • Primus needs periodic care and maintenance because without it, it can affect the operation of the original Omnitrix/Ultimatrix in the long run.[1][2]
  • Eunice is one of Primus' caretakers.
  • Primus' connection to the original Omnitrix/Ultimatrix seemed to have no problem at all in transcending dimensions. They were fully functional in the Null Void, Legerdomain, and even to places such as video games,[3] outside the universe like the hidden Forge of Creation and in parallel universes.[4]
  • Before Azmuth invented the original Omnitrix, Primus was a work in progress and did not have a DNA database.[5]


Derrick J. Wyatt

Matt Wayne

Celestial Bodies
Seen Planets
AldabraAnodyneAnur TransylAranhaschimmiaAugstakaCoda CodaEarthEncephalonus IVGalvan PrimeIncursean HomeworldKhorosLepidopterraMikd'ltyPantophagePeptos XIPeptos XIIPetropiaPisccissPlutoPrimusRevonnahSulcusT.K.Terminus IIITerraexcavaTurrawusteVilgaxiaXenon
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 System Andromeda GalaxyMilky Way
Other Celestial Bodies
Cosmic StormsForge of CreationNosedeen QuasarTeslavorr
Retconned Non-canon
ChroniaOsmosOsmos V CorundorIgnisLignumMor' OtesiPoiana LüncasZvezda