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- 1 History
- 2 Alternate Timelines
- 3 Video Games
- 4 Notable Inhabitants
- 5 Trivia
- 6 References
Most of Earth's myths and legends come from alien encounters in ancient times. For example, Stonehenge is a Galvan practical joke and the pyramids were built by Tetramands, with the assistance of humans and two Galvan.[DJW 2]
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.
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.
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.
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.
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. On the same night that she found the Omnitrix, Gwen 10 was recruited by Professor Paradox and No Watch Ben to join them in No Watch Timeline for a battle between the good and evil Omnitrix-wielders from across the multiverse. After Vilgax and the evil Bens were defeated and sent back to their respective realities, Paradox took Gwen 10 back to her timeline.
Gwen 10 looks identical to, and has the same sense of clothing as, the Prime Timeline's version of Gwen when she was ten, although Gwen 10's shirt has a number 10 in the cat logo. From what has been seen of Gwen 10's personality, it is identical to that of her Prime counterpart when she was 10.
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.
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.
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. He is defeated and put into deep freeze in a facility called 'Kim Labs'.
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
- Krakkens[DJW 3]
- Dolphins[DJW 4]
- Interdimensional White Lab Mice[DJW 5]
- Komodo Dragons
- Komodo (altered)
- Mythical Dragons[DJW 6][DJW 7]
- Various Other Cryptids
- Galvanic Mechamorph
- Various Citizens of Undertown
- Verdona (formerly)
- Earth is an open system.
- Earth is located in a key strategic location for taking over the galaxy.
- Earth is the richest source of iron in the universe.
- Aliens are not allowed to urinate in Earth's bushes as it could lead to an environmental catastrophe.
- "Htrae", which is Earth spelled backwards, is apparently Earth's secret true name.
- Ma Vreedle refers to the Solar System as the "Sol System." 
- 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.
- Magister Labrid
- Ben 10 Returns: Part 1
- Collect This
- Solitary Alignment
- Inspector 13
- Max Tennyson
- Azmuth's Father
- Ben 10: Destroy All Aliens
- Fight at the Museum
- The Frogs of War: Part 2
- Ben 10-Generator Rex: Heroes United
- Rook Blonko
- The Frogs of War: Part 1
- The Galactic Enforcers
- Blukic and Driba Go to Mr. Smoothy's
- Where the Magic Happens
- The Mother of All Vreedles